diff --git a/ontology/saref4ehaw.ttl b/ontology/saref4ehaw.ttl
index fb61e56f7d84890319928e186c61a45e7bcfac10..5fe69b64776aab79cbbb7eb89f0942bd1f1c2a1e 100644
--- a/ontology/saref4ehaw.ttl
+++ b/ontology/saref4ehaw.ttl
@@ -12,26 +12,13 @@
 @prefix s4envi: <https://saref.etsi.org/saref4envi/> .
 @prefix s4wear: <https://saref.etsi.org/s4wear/> .
 @prefix dcterms: <http://purl.org/dc/terms/> .
+@prefix s4ehawInst: <https://saref.etsi.org/s4ehaw/instances/> .
 @base <https://saref.etsi.org/s4ehaw/> .
 
-<https://saref.etsi.org/s4ehaw/> rdf:type owl:Ontology  , voaf:Vocabulary ;
+<https://saref.etsi.org/s4ehaw/> rdf:type owl:Ontology ;
                                  
                                  rdfs:label "SAREF4EHAW"@en ;
-
-                                 dcterms:title "SAREF4EHAW: an extension of SAREF for eHealth Ageing Well domain"@en ;
-                                 
-                                 dcterms:issued "date when the document is online"^^xsd:date ;
                                  
-                                 dcterms:modified "do not set this"^^xsd:date ;
-                                 
-                                 dcterms:created "start date of the STF 2019-01-01"^^xsd:date ;
-                                 
-                                 rdfs:comment "Extension of SAREF for eHealth Ageing Well domain." ;
-                                 
-                                 vann:preferredNamespaceUri "https://saref.etsi.org/s4ehaw/" ;
-
-                                 vann:preferredNamespacePrefix "s4ehaw" ;
-
                                  dcterms:description """The objective of SAREF4EHAW is to extend SAREF ontology for the eHealth/Ageing-well (EHAW) vertical. Clause 4.1 of the present document shortly introduces a high level view of the envisioned SAREF4EHAW semantic model and modular ontology, with the retained concepts (i.e. classes) and their relations. 
 SAREF4EHAW extension has been specified and formalised by investigating EHAW domain related resources, as reported in ETSI TR 103 509, such as: potential stakeholders, standardization initiatives, alliances/associations, European projects, EC directives, existing ontologies, and data repositories. Therefore, SAREF4EHAW modular ontology shall both:
  - Allow the implementation of a limited set of typical EHAW related use cases already identified in ETSI TR 103 509, i.e.
@@ -45,27 +32,39 @@ SAREF4EHAW mainly reuses the following existing ontologies: SAREF, ETSI SmartBAN
 For semantic interoperability handling purposes, an ontology based solution, combined with sensing-as-a-service and WoT strategies, is retained for SAREF4EHAW. Therefore, an upper level ontology, at service level, shall also behas been fully modelled (Service class and sub-classes depicted in the previous figure).
 For embedded semantic analytics purposes, SAREF4EHAW shall behas been designed using the modularity principle (see ETSI TR 103 509) and can thus be mainly described by the following self-contained knowledge sub-ontologies (or modules): HealthActor, Ban, HealthDevice, Function (measured data related concepts included) and Service."""^^<http://www.iana.org/assignments/media-types/text/markdown> ;
                                  
+                                 dcterms:issued "date when the document is online"^^xsd:date ;
+                                 
+                                 dcterms:modified "do not set this"^^xsd:date ;
+                                 
+                                 dcterms:created "start date of the STF 2019-01-01"^^xsd:date ;
+                                 
+                                 vann:preferredNamespacePrefix "s4ehaw" ;
+                                 
+                                 rdfs:comment "Extension of SAREF for eHealth Ageing Well domain." ;
+                                 
+                                 dcterms:title "SAREF4EHAW: an extension of SAREF for eHealth Ageing Well domain"@en ;
+                                 
                                  owl:versionInfo "v1.1.1" ;
                                  
+                                 vann:preferredNamespaceUri "https://saref.etsi.org/s4ehaw/" ;
+                                 
+                                 dcterms:creator <http://www-public.imtbs-tsp.eu/~girodgen/> ;
+                                 
+                                 dcterms:contributor <http://www-public.imtbs-tsp.eu/~girodgen/> ,
+                                                     <http://www.maxime-lefrancois.info/> ;
+                                 
                                  dcterms:license <https://forge.etsi.org/etsi-software-license> ;
                                  
                                  dcterms:source <https://forge.etsi.org/rep/SAREF/s4ehaw/> ;
                                  
-                                 owl:imports <https://saref.etsi.org/saref/core/> ;
+                                 dcterms:contributor <https://research.utwente.nl/en/persons/jo%C3%A3o-luiz-moreira> ;
+                                 
+                                 owl:imports <https://saref.etsi.org/saref/latest/saref.ttl> ;
                                  
                                  dcterms:publisher <https://www.etsi.org/> ;
-
-                                 dcterms:creator <http://www-public.imtbs-tsp.eu/~girodgen/> ;
                                  
-                                 dcterms:contributor <http://www-public.imtbs-tsp.eu/~girodgen/> ;
-
-                                 dcterms:contributor <https://www.linkedin.com/in/lina-nachabe-2b292457/> ;
-
-                                 dcterms:contributor <http://www.maxime-lefrancois.info/> ;
-
-                                 dcterms:contributor <https://research.utwente.nl/en/persons/jo%C3%A3o-luiz-moreira> ;
-
-                                 dcterms:contributor <https://www.linkedin.com/in/maurodragoni/> .
+                                 dcterms:contributor <https://www.linkedin.com/in/lina-nachabe-2b292457/> ,
+                                                     <https://www.linkedin.com/in/maurodragoni/> .
 
 
 #################################################################
@@ -153,8 +152,6 @@ rdf:comment rdf:type owl:AnnotationProperty .
 
 
 
-
-
 #################################################################
 #
 #    Object Properties
@@ -371,7 +368,6 @@ s4ehaw:hasMode rdf:type owl:ObjectProperty ;
                rdfs:range s4ehaw:Mode .
 
 
-
 ###  https://saref.etsi.org/s4ehaw/hasOperatingConstraint
 
 s4ehaw:hasOperatingConstraint rdf:type owl:ObjectProperty ;
@@ -595,44 +591,43 @@ s4envi:hasFrequencyMeasurement rdf:type owl:ObjectProperty ;
 
 ### https://saref.etsi.org/saref/core/hasCommand
 
-saref:hasCommand rdf:type owl:ObjectProperty ;
-
-                 rdfs:label "has command"@en ;
-
-                 rdfs:comment "A function has a command (a directive that a device must support to perform a given function)."@en ;
-
-                 rdfs:range saref:Command ;
-
-                 rdfs:domain saref:Function .
+### saref:hasCommand rdf:type owl:ObjectProperty ;
+### 
+###                  rdfs:label "has command"@en ;
+### 
+###                  rdfs:comment "A function has a command (a directive that a device must support to perform a given function)."@en ;
+### 
+###                  rdfs:range saref:Command ;
+### 
+###                  rdfs:domain saref:Function .
 
 
 
 ### https://saref.etsi.org/saref/core/hasFunction
 
-saref:hasFunction rdf:type owl:ObjectProperty ;
+### saref:hasFunction rdf:type owl:ObjectProperty ;
 
-                  rdfs:label "has function"@en ;
+###                   rdfs:label "has function"@en ;
 
-                  rdfs:comment "A device has a function (e.g., for an ehealth device, temperature measurement, blood pressure measurement, insulin regulation)."@en ;
+###                   rdfs:comment "A device has a function (e.g., for an ehealth device, temperature measurement, blood pressure measurement, insulin regulation)."@en ;
 
-                  rdfs:range saref:Function ;
+###                   rdfs:range saref:Function ;
 
-                  rdfs:domain saref:Device .
+###                   rdfs:domain saref:Device .
 
 
 
 ###  https://saref.etsi.org/saref/core/offers
 
-saref:offers rdf:type owl:ObjectProperty ;
-
-             rdfs:label "offers"@en ;
+###  saref:offers rdf:type owl:ObjectProperty ;
 
-             rdfs:comment "A device offers services, e.g., for an eHealth device, a thermometer offers a temperature measurement service."@en ;
+###               rdfs:label "offers"@en ;
 
-             rdfs:range saref:Service ;
+###               rdfs:comment "A device offers services, e.g., for an eHealth device, a thermometer offers a temperature measurement service."@en ;
 
-             rdfs:domain saref:Device .
+###               rdfs:range saref:Service ;
 
+###               rdfs:domain saref:Device .
 
 
 
@@ -643,7 +638,6 @@ saref:offers rdf:type owl:ObjectProperty ;
 #
 #################################################################
 
-
 ###  https://saref.etsi.org/s4ehaw/activityDuration
 
 s4ehaw:activityDuration rdf:type owl:DatatypeProperty ;
@@ -1483,7 +1477,6 @@ s4ehaw:velocity rdf:type owl:DatatypeProperty ;
 
 
 
-
 #################################################################
 #
 #    Classes
@@ -1570,25 +1563,25 @@ s4ehaw:Caregiver rdf:type owl:Class ;
 
 ###  https://saref.etsi.org/core/Command
 
-saref:Command rdf:type owl:Class ;
+### saref:Command rdf:type owl:Class ;
 
-              rdfs:comment "A directive that a device must support to perform a certain function. A command may act upon a state, but does not necessarily act upon a state. For example, the ON command acts upon the ON/OFF state, but the GET command does not act upon any state, it simply gives a directive to retrieve a certain value. We propose here a list of commands that are relevant for the purpose of SAREF, but this list can be extended."@en ;
+###               rdfs:comment "A directive that a device must support to perform a certain function. A command may act upon a state, but does not necessarily act upon a state. For example, the ON command acts upon the ON/OFF state, but the GET command does not act upon any state, it simply gives a directive to retrieve a certain value. We propose here a list of commands that are relevant for the purpose of SAREF, but this list can be extended."@en ;
 
-              rdfs:isDefinedBy saref: ;
+###               rdfs:isDefinedBy saref: ;
 
-              rdfs:label "Command"@en .
+###               rdfs:label "Command"@en .
 
 
 
 ###  https://saref.etsi.org/core/NotifyCommand
 
-saref:NotifyCommand rdf:type owl:Class ;
+### saref:NotifyCommand rdf:type owl:Class ;
 
-                    rdfs:comment "A type of command used for notifications."@en ;
+###                     rdfs:comment "A type of command used for notifications."@en ;
 	     
-                    rdfs:isDefinedBy saref: ;
+###                     rdfs:isDefinedBy saref: ;
 	     
-                    rdfs:label "Notify command"@en .
+###                     rdfs:label "Notify command"@en .
 
 
 
@@ -1658,13 +1651,13 @@ s4ehaw:Data rdf:type owl:Class ;
 
 ### https://saref.etsi.org/s4ehaw/core/Device
 
-saref:Device rdf:type owl:Class ;
+### saref:Device rdf:type owl:Class ;
 
-             rdfs:comment "A tangible object designed to accomplish a particular task in households, common public buildings or offices. In order to accomplish this task, the device performs one or more functions. For example, a washing machine is designed to wash (task) and to accomplish this task it performs the start and stop function."@en ;
+###              rdfs:comment "A tangible object designed to accomplish a particular task in households, common public buildings or offices. In order to accomplish this task, the device performs one or more functions. For example, a washing machine is designed to wash (task) and to accomplish this task it performs the start and stop function."@en ;
 	     
-             rdfs:isDefinedBy saref: ;
+###              rdfs:isDefinedBy saref: ;
 	     
-             rdfs:label "Device"@en .
+###              rdfs:label "Device"@en .
 
 
 
@@ -1714,24 +1707,24 @@ s4ehaw:FunctionalDevice rdf:type owl:Class ;
 
 ###  https://saref.etsi.org/core/Function
 
-saref:Function rdf:type owl:Class ;
+###  saref:Function rdf:type owl:Class ;
 
-               rdfs:comment "The functionality necessary to accomplish the task for which a device is designed for, .e.g. a temperature measurement function. A device can be designed to perform more than one function. Functions can be structured in categories (subclasses) that reflect different points of view, for example, considering the specific application area for which a function can be used (e.g., heart rate, temperature, motion, oxygen level...), or the capability that a function can support (e.g., receive, reply, notify, etc.), and so forth. "@en ;
+###                 rdfs:comment "The functionality necessary to accomplish the task for which a device is designed for, .e.g. a temperature measurement function. A device can be designed to perform more than one function. Functions can be structured in categories (subclasses) that reflect different points of view, for example, considering the specific application area for which a function can be used (e.g., heart rate, temperature, motion, oxygen level...), or the capability that a function can support (e.g., receive, reply, notify, etc.), and so forth. "@en ;
 
-               rdfs:isDefinedBy saref: ;
+###                 rdfs:isDefinedBy saref: ;
 
-               rdfs:label "Function"@en .
+###                 rdfs:label "Function"@en .
 
 
 ###  https://saref.etsi.org/saref/core/FunctionRelated
 
-saref:FunctionRelated rdf:type owl:Class ;
+###  saref:FunctionRelated rdf:type owl:Class ;
 
-             rdfs:comment "A SAREF ontology category that considers Devices and their specification in terms of functions, states and services."@en ;
+###               rdfs:comment "A SAREF ontology category that considers Devices and their specification in terms of functions, states and services."@en ;
 	     
-             rdfs:isDefinedBy saref: ;
+###               rdfs:isDefinedBy saref: ;
 	     
-             rdfs:label "Function related"@en .
+###               rdfs:label "Function related"@en .
 
 
 
@@ -1850,13 +1843,13 @@ s4ehaw:Location rdf:type owl:Class ;
 
 ### https://saref.etsi.org/s4ehaw/core/Measurement
 
-saref:Measurement rdf:type owl:Class ;
+### saref:Measurement rdf:type owl:Class ;
 
-                  rdfs:comment "Represents the measured value made over a property. It is also linked to the unit of measure in which the value is expressed and the timestamp of the measurement."@en ;
+###                   rdfs:comment "Represents the measured value made over a property. It is also linked to the unit of measure in which the value is expressed and the timestamp of the measurement."@en ;
 	     
-                  rdfs:isDefinedBy saref: ;
+###                   rdfs:isDefinedBy saref: ;
 	     
-                  rdfs:label "Measurement"@en .
+###                   rdfs:label "Measurement"@en .
 
 
 
@@ -2009,13 +2002,13 @@ s4ehaw:ResponsibleParty rdf:type owl:Class ;
 
 ###  https://saref.etsi.org/core/Service
 
-saref:Service rdf:type owl:Class ;
+### saref:Service rdf:type owl:Class ;
 
-              rdfs:comment "A service is a representation of a function to a network that makes the function discoverable, registerable, remotely controllable by other devices in the network. A service can represent one or more functions. A Service like e.g. a heart rate measurement service is offered by a health device that wants (a certain set of) its function(s) to be discoverable, registerable, remotely controllable by other health devices, health applications, or health actors, in the health-related network."@en ;
+###               rdfs:comment "A service is a representation of a function to a network that makes the function discoverable, registerable, remotely controllable by other devices in the network. A service can represent one or more functions. A Service like e.g. a heart rate measurement service is offered by a health device that wants (a certain set of) its function(s) to be discoverable, registerable, remotely controllable by other health devices, health applications, or health actors, in the health-related network."@en ;
 
-             rdfs:isDefinedBy saref: ;
+###              rdfs:isDefinedBy saref: ;
 
-             rdfs:label "Service"@en .
+###              rdfs:label "Service"@en .
 
 
 
@@ -2051,13 +2044,13 @@ s4ehaw:ServiceProfile rdf:type owl:Class ;
 
 ###  https://saref.etsi.org/core/Task
 
-saref:Task rdf:type owl:Class ;
+### saref:Task rdf:type owl:Class ;
 
-           rdfs:comment "The goal for which a device (e.g. a health device) is designed (from a user perspective). For example, a thermometer is designed for the task of measuring a temperature."@en ;
+###            rdfs:comment "The goal for which a device (e.g. a health device) is designed (from a user perspective). For example, a thermometer is designed for the task of measuring a temperature."@en ;
 
-           rdfs:isDefinedBy saref: ;
+###            rdfs:isDefinedBy saref: ;
 
-           rdfs:label "Task"@en .
+###            rdfs:label "Task"@en .
 
 
 
@@ -2083,13 +2076,13 @@ s4ehaw:TimeSeriesMeasurements rdf:type owl:Class ;
 
 ###  https://saref.etsi.org/saref/core/UnitOfMeasure
 
-saref:UnitOfMeasure rdf:type owl:Class ;
+###  saref:UnitOfMeasure rdf:type owl:Class ;
 
-                    rdfs:comment "The unit of measure is a standard for measurement of a quantity, such as a Property. For example, Power is a property and Watt is a unit of power that represents a definite predetermined power: when we say 10 Watt, we actually mean 10 times the definite predetermined power called \"watt\". This definition is based on the definition of unit of measure in the Ontology of units of Measure (OM)."@en ;
+###                      rdfs:comment "The unit of measure is a standard for measurement of a quantity, such as a Property. For example, Power is a property and Watt is a unit of power that represents a definite predetermined power: when we say 10 Watt, we actually mean 10 times the definite predetermined power called \"watt\". This definition is based on the definition of unit of measure in the Ontology of units of Measure (OM)."@en ;
 
-                    rdfs:isDefinedBy saref: ;
+###                      rdfs:isDefinedBy saref: ;
 
-                    rdfs:label "Unit of measure"@en .
+###                      rdfs:label "Unit of measure"@en .
 
 
 ###  https://saref.etsi.org/s4ehaw/User
@@ -2143,6 +2136,7 @@ s4ehaw:HealthSensor rdf:type owl:Class ;
 
 
 
+
 #################################################################
 #
 #    Individuals
@@ -2150,129 +2144,227 @@ s4ehaw:HealthSensor rdf:type owl:Class ;
 #################################################################
 
 
-###  https://saref.etsi.org/s4ehaw/assistedLiving
+###  https://saref.etsi.org/s4ehaw/instances/ECGdeviceFrequency
 
-s4ehaw:assistedLiving rdf:type owl:NamedIndividual ,
-                               s4ehaw:BanApplicationDomain .
+s4ehawInst:ECGdeviceFrequency rdf:type owl:NamedIndividual ,
+                                 s4envi:Frequency .
 
 
 
-###  https://saref.etsi.org/s4ehaw/blindImpairment
+###  https://saref.etsi.org/s4ehaw/instances/assistedLiving
 
-s4ehaw:blindImpairment rdf:type owl:NamedIndividual ,
-                                s4ehaw:Impairment .
+s4ehawInst:assistedLiving rdf:type s4ehaw:BanApplicationDomain ,
+                             owl:NamedIndividual .
 
 
 
-###  https://saref.etsi.org/s4ehaw/deafImpairment
+###  https://saref.etsi.org/s4ehaw/instances/blindImpairment
 
-s4ehaw:deafImpairment rdf:type owl:NamedIndividual ,
-                               s4ehaw:Impairment .
+s4ehawInst:blindImpairment rdf:type s4ehaw:Impairment ,
+                              owl:NamedIndividual .
 
 
 
-###  https://saref.etsi.org/s4ehaw/emergency
+###  https://saref.etsi.org/s4ehaw/instances/deafImpairment
 
-s4ehaw:emergency rdf:type owl:NamedIndividual ,
-                          s4ehaw:BanApplicationDomain .
+s4ehawInst:deafImpairment rdf:type s4ehaw:Impairment ,
+                             owl:NamedIndividual .
 
 
 
-###  https://saref.etsi.org/s4ehaw/exercising
+###  https://saref.etsi.org/s4ehaw/instances/emergency
 
-s4ehaw:exercising rdf:type owl:NamedIndividual ,
-                           s4ehaw:Posture .
+s4ehawInst:emergency rdf:type s4ehaw:BanApplicationDomain ,
+                        owl:NamedIndividual .
 
 
 
-###  https://saref.etsi.org/s4ehaw/handlingImpairment
+###  https://saref.etsi.org/s4ehaw/instances/exercising
 
-s4ehaw:handlingImpairment rdf:type owl:NamedIndividual ,
-                                   s4ehaw:Impairment .
+s4ehawInst:exercising rdf:type s4ehaw:Posture ,
+                         owl:NamedIndividual .
 
 
 
-###  https://saref.etsi.org/s4ehaw/healthcare
+###  https://saref.etsi.org/s4ehaw/instances/handlingImpairment
 
-s4ehaw:healthcare rdf:type owl:NamedIndividual ,
-                           s4ehaw:BanApplicationDomain .
+s4ehawInst:handlingImpairment rdf:type s4ehaw:Impairment ,
+                                 owl:NamedIndividual .
 
 
 
-###  https://saref.etsi.org/s4ehaw/hearingImpairment
+###  https://saref.etsi.org/s4ehaw/instances/healthcare
 
-s4ehaw:hearingImpairment rdf:type owl:NamedIndividual ,
-                                  s4ehaw:Impairment .
+s4ehawInst:healthcare rdf:type s4ehaw:BanApplicationDomain ,
+                         owl:NamedIndividual .
 
 
 
-###  https://saref.etsi.org/s4ehaw/lying
+###  https://saref.etsi.org/s4ehaw/instances/hearingImpairment
 
-s4ehaw:lying rdf:type owl:NamedIndividual ,
-                      s4ehaw:Posture .
+s4ehawInst:hearingImpairment rdf:type s4ehaw:Impairment ,
+                                owl:NamedIndividual .
 
 
 
-###  https://saref.etsi.org/s4ehaw/mobilityImpairment
+###  https://saref.etsi.org/s4ehaw/instances/lying
 
-s4ehaw:mobilityImpairment rdf:type owl:NamedIndividual ,
-                                   s4ehaw:Impairment .
+s4ehawInst:lying rdf:type s4ehaw:Posture ,
+                    owl:NamedIndividual .
 
 
 
-###  https://saref.etsi.org/s4ehaw/pervasiveComputing
+###  https://saref.etsi.org/s4ehaw/instances/mobilityImpairment
 
-s4ehaw:pervasiveComputing rdf:type owl:NamedIndividual ,
-                                   s4ehaw:BanApplicationDomain .
+s4ehawInst:mobilityImpairment rdf:type s4ehaw:Impairment ,
+                                 owl:NamedIndividual .
 
 
 
-###  https://saref.etsi.org/s4ehaw/running
+###  https://saref.etsi.org/s4ehaw/instances/pervasiveComputing
 
-s4ehaw:running rdf:type owl:NamedIndividual ,
-                        s4ehaw:Posture .
+s4ehawInst:pervasiveComputing rdf:type s4ehaw:BanApplicationDomain ,
+                                 owl:NamedIndividual .
 
 
 
-###  https://saref.etsi.org/s4ehaw/safety
+###  https://saref.etsi.org/s4ehaw/instances/running
 
-s4ehaw:safety rdf:type owl:NamedIndividual ,
-                       s4ehaw:BanApplicationDomain .
+s4ehawInst:running rdf:type s4ehaw:Posture ,
+                      owl:NamedIndividual .
 
 
 
-###  https://saref.etsi.org/s4ehaw/sitting
+###  https://saref.etsi.org/s4ehaw/instances/safety
 
-s4ehaw:sitting rdf:type owl:NamedIndividual ,
-                        s4ehaw:Posture .
+s4ehawInst:safety rdf:type s4ehaw:BanApplicationDomain ,
+                     owl:NamedIndividual .
 
 
 
-###  https://saref.etsi.org/s4ehaw/sportTraining
+###  https://saref.etsi.org/s4ehaw/instances/sitting
 
-s4ehaw:sportTraining rdf:type owl:NamedIndividual ,
-                              s4ehaw:BanApplicationDomain .
+s4ehawInst:sitting rdf:type s4ehaw:Posture ,
+                      owl:NamedIndividual .
 
 
 
-###  https://saref.etsi.org/s4ehaw/telemedicine
+###  https://saref.etsi.org/s4ehaw/instances/sportTraining
 
-s4ehaw:telemedicine rdf:type owl:NamedIndividual ,
-                             s4ehaw:BanApplicationDomain .
+s4ehawInst:sportTraining rdf:type s4ehaw:BanApplicationDomain ,
+                            owl:NamedIndividual .
 
 
 
-###  https://saref.etsi.org/s4ehaw/visualImpairment
+###  https://saref.etsi.org/s4ehaw/instances/telemedicine
 
-s4ehaw:visualImpairment rdf:type owl:NamedIndividual ,
-                                 s4ehaw:Impairment .
+s4ehawInst:telemedicine rdf:type s4ehaw:BanApplicationDomain ,
+                           owl:NamedIndividual .
 
 
 
-###  https://saref.etsi.org/s4ehaw/walking
+###  https://saref.etsi.org/s4ehaw/instances/visualImpairment
 
-s4ehaw:walking rdf:type owl:NamedIndividual ,
-                        s4ehaw:Posture .
+s4ehawInst:visualImpairment rdf:type s4ehaw:Impairment ,
+                               owl:NamedIndividual .
+
+
+
+###  https://saref.etsi.org/s4ehaw/instances/walking
+
+s4ehawInst:walking rdf:type s4ehaw:Posture ,
+                      owl:NamedIndividual .
+
+
+
+###  http://www.wurvoc.org/vocabularies/om-1.8/hertz
+
+<http://www.wurvoc.org/vocabularies/om-1.8/hertz> rdf:type owl:NamedIndividual ,
+                                                           s4envi:FrequencyUnit .
+
+
+
+###  https://saref.etsi.org/s4ehaw/
+
+<https://saref.etsi.org/s4ehaw/> rdf:type voaf:Vocabulary ,
+                                          owl:NamedIndividual .
+
+
+
+###  https://saref.etsi.org/s4ehaw/instances/ECGLead_III_code131389
+
+s4ehawInst:ECGLead_III_code131389 rdf:type owl:NamedIndividual ,
+                                           <https://w3id.org/saref#Sensor> .
+
+
+
+###  https://saref.etsi.org/s4ehaw/instances/ECGLead_II_code131330
+
+s4ehawInst:ECGLead_II_code131330 rdf:type owl:NamedIndividual ,
+                                          <https://w3id.org/saref#Sensor> .
+
+
+
+###  https://saref.etsi.org/s4ehaw/instances/ECGLead_I_code131329
+
+s4ehawInst:ECGLead_I_code131329 rdf:type owl:NamedIndividual ,
+                                         <https://w3id.org/saref#Sensor> .
+
+
+
+###  https://saref.etsi.org/s4ehaw/instances/ECGLead_Vx_RL_code131389
+
+s4ehawInst:ECGLead_Vx_RL_code131389 rdf:type owl:NamedIndividual ,
+                                             <https://w3id.org/saref#Sensor> .
+
+
+
+###  https://saref.etsi.org/s4ehaw/instances/FrequencyOf256Hertz
+
+s4ehawInst:FrequencyOf256Hertz rdf:type owl:NamedIndividual ,
+                                        s4envi:FrequencyMeasurement ;
+                               
+                               rdfs:label "256Hz frequency" ;
+                               
+                               <https://w3id.org/saref#hasValue> "256"^^xsd:int ;
+                               
+                               <https://w3id.org/saref#relatesToProperty> s4ehawInst:ECGdeviceFrequency ;
+                               
+                               <https://w3id.org/saref#isMeasuredIn> <http://www.wurvoc.org/vocabularies/om-1.8/hertz> .
+
+
+
+###  https://saref.etsi.org/s4ehaw/instances/RecordingECGSession_01
+
+s4ehawInst:RecordingECGSession_01 rdf:type s4ehaw:MeasurementCollectionSession ,
+                                           owl:NamedIndividual ;
+                                  
+                                  rdfs:label "Recording ECG session 0001" ;
+                                  
+                                  rdfs:comment "An ECG recording session taken during a trip (truck driver)." .
+
+
+
+###  https://saref.etsi.org/s4ehaw/instances/Shimmer3ECG_unit_T9JRN42
+
+s4ehawInst:Shimmer3ECG_unit_T9JRN42 rdf:type s4ehaw:HealthDevice ,
+                                             s4ehaw:HealthWearable ,
+                                             owl:NamedIndividual ;
+                                    
+                                    rdfs:label "Shimmer3 ECG unit T9J-RN42" ;
+                                    
+                                    rdfs:comment "Shimmer3 EXG unit: device bought for INTER-IoT-EWS project, composed of ECG sensors and other features (e.g. Accelerometer). " ;
+                                    
+                                    rdfs:seeAlso "http://www.shimmersensing.com/products/ecg-development-kit#specifications-tab" ;
+                                    
+                                    <https://w3id.org/saref#consistsOf> s4ehawInst:ECGLead_III_code131389 ,
+                                                                        s4ehawInst:ECGLead_II_code131330 ,
+                                                                        s4ehawInst:ECGLead_I_code131329 ,
+                                                                        s4ehawInst:ECGLead_Vx_RL_code131389 ;
+                                    
+                                    s4envi:hasFrequencyMeasurement s4ehawInst:FrequencyOf256Hertz ;
+                                    
+                                    <https://w3id.org/saref#accomplishes> s4ehawInst:RecordingECGSession_01 .