diff --git a/ontology/saref.ttl b/ontology/saref.ttl
index ddc6f9c1093f9ddbe0e9c02db6e912afb95654b6..df6a30e11a4d7a9788a5e03c7a0aea05da905f97 100644
--- a/ontology/saref.ttl
+++ b/ontology/saref.ttl
@@ -18,7 +18,7 @@
                           dcterms:title "SAREF: the Smart Applications REFerence ontology"@en ;
                           dcterms:license <http://purl.org/NET/rdflicense/cc-by4.0> ;
                           dcterms:contributor <https://www.linkedin.com/in/lauradaniele> ;
-                          dcterms:contributor <http://purl.org/net/mpoveda> ;
+                          dcterms:contributor <https://w3id.org/people/mpoveda/> ;
                           dcterms:contributor <http://www.garcia-castro.com/foaf.rdf#me> ;
                           dcterms:contributor <http://maxime-lefrancois.info/me#> ;
                           vann:preferredNamespacePrefix "saref" ;
@@ -53,7 +53,7 @@ saref:consistsOf rdf:type owl:ObjectProperty ;
 
 ###  https://saref.etsi.org/controlsProperty
 saref:controlsProperty rdf:type owl:ObjectProperty ;
-                       rdfs:comment "A relationship specifying the Property that can be controlled by a certain Device"@en ;
+                       rdfs:comment "A relationship specifying the property that can be controlled by a certain device"@en ;
                        rdfs:label "controls property"@en .
 
 
@@ -64,6 +64,13 @@ saref:hasCommand rdf:type owl:ObjectProperty ;
                  rdfs:label "has command"@en .
 
 
+###  https://saref.etsi.org/isMeasurementOf
+saref:isMeasurementOf rdf:type owl:ObjectProperty ;
+                      owl:inverseOf saref:hasMeasurement ;
+                      rdfs:comment "A relationship between a measurement and the feature of interest whose quality was measured"@en ;
+                      rdfs:label "isMeasurementOf"@en .
+
+
 ###  https://saref.etsi.org/hasFunction
 saref:hasFunction rdf:type owl:ObjectProperty ;
                   rdfs:comment "A relationship identifying the function of a device"@en ;
@@ -84,7 +91,7 @@ saref:hasMeterReadingType rdf:type owl:ObjectProperty ;
 
 ###  https://saref.etsi.org/hasPrice
 saref:hasPrice rdf:type owl:ObjectProperty ;
-               rdfs:comment "A relationships indentifying the price associated to an entity"@en ;
+               rdfs:comment "A relationship indentifying the price associated to an entity"@en ;
                rdfs:label "has price"@en .
 
 
@@ -94,10 +101,17 @@ saref:hasProfile rdf:type owl:ObjectProperty ;
                  rdfs:label "has profile"@en .
 
 
+###  https://saref.etsi.org/hasProperty
+saref:hasProperty rdf:type owl:ObjectProperty ;
+                  owl:inverseOf saref:isPropertyOf ;
+                  rdfs:comment "A relationship between a feature of interest and a property of that feature"@en ;
+                  rdfs:label "has property"@en .
+
+
 ###  https://saref.etsi.org/hasSensingRange
 saref:hasSensingRange rdf:type owl:ObjectProperty ;
                       rdfs:comment "A relationship between a sensing function and a measurement identifying the range of a sensor detection"@en ;
-                      rdfs:label "has sensing range "@en .
+                      rdfs:label "has sensing range"@en .
 
 
 ###  https://saref.etsi.org/hasSensorType
@@ -132,7 +146,7 @@ saref:hasTypicalConsumption rdf:type owl:ObjectProperty ;
 
 ###  https://saref.etsi.org/isAbout
 saref:isAbout rdf:type owl:ObjectProperty ;
-              rdfs:comment "A relationship identifying what an entity, such as a Profile, is about"@en ;
+              rdfs:comment "A relationship identifying what an entity, such as a profile, is about"@en ;
               rdfs:label "isAbout"@en .
 
 
@@ -154,6 +168,11 @@ saref:isControlledByDevice rdf:type owl:ObjectProperty ;
                            rdfs:label "is controlled by device"@en .
 
 
+###  https://saref.etsi.org/hasMeasurement
+saref:hasMeasurement rdf:type owl:ObjectProperty ;
+                     rdfs:comment "A relationship between a feature of interest and a measurement about it"@en ;
+                     rdfs:label "has measurement"@en .
+
 ###  https://saref.etsi.org/isMeasuredByDevice
 saref:isMeasuredByDevice rdf:type owl:ObjectProperty ;
                          rdfs:comment "A relationship specifying the devices that can measure a certain property"@en ;
@@ -173,6 +192,12 @@ saref:isOfferedBy rdf:type owl:ObjectProperty ;
                   rdfs:label "is offered by"@en .
 
 
+###  https://saref.etsi.org/isPropertyOf
+saref:isPropertyOf rdf:type owl:ObjectProperty ;
+                   rdfs:comment "A relationship between a property and the feature of interest it belongs to"@en ;
+                   rdfs:label "is property of"@en .
+
+
 ###  https://saref.etsi.org/isUsedFor
 saref:isUsedFor rdf:type owl:ObjectProperty ;
                 rdfs:comment "A relationship specifying the commodity for which a device is used for"@en ;
@@ -181,9 +206,15 @@ saref:isUsedFor rdf:type owl:ObjectProperty ;
 
 ###  https://saref.etsi.org/makesMeasurement
 saref:makesMeasurement rdf:type owl:ObjectProperty ;
+                       owl:inverseOf saref:measurementMadeBy ;
                        rdfs:comment "A relation between a device and the measurements it makes. Such measurement will link together the value of the measurement, its unit of measure and the property to which it relates."@en ;
                        rdfs:label "makes measurement"@en .
 
+###  https://saref.etsi.org/measurementMadeBy
+saref:measurementMadeBy rdf:type owl:ObjectProperty ;
+                        rdfs:comment "A relation between a measurement and the device that made it."@en ;
+                        rdfs:label "measurement made by"@en .
+
 
 ###  https://saref.etsi.org/measuresProperty
 saref:measuresProperty rdf:type owl:ObjectProperty ;
@@ -475,6 +506,20 @@ saref:EventFunction rdf:type owl:Class ;
                     rdfs:label "Event function"@en .
 
 
+###  https://saref.etsi.org/FeatureOfInterest
+saref:FeatureOfInterest rdf:type owl:Class ;
+                        rdfs:subClassOf [ a owl:Restriction ;
+                                          owl:onProperty saref:hasProperty ;
+                                          owl:allValuesFrom saref:Property 
+                                        ] ,
+                                        [ a owl:Restriction ;
+                                          owl:onProperty saref:hasMeasurement ;
+                                          owl:allValuesFrom saref:Measurement 
+                                        ] ; 
+                        rdfs:comment "A feature of interest represents any real world entity from which a property is measured."@en ;
+                        rdfs:label "Feature of interest"@en .
+
+
 ###  https://saref.etsi.org/Function
 saref:Function rdf:type owl:Class ;
                rdfs:subClassOf [ rdf:type owl:Restriction ;
@@ -633,6 +678,10 @@ saref:Load rdf:type owl:Class ;
 ###  https://saref.etsi.org/Measurement
 saref:Measurement rdf:type owl:Class ;
                   rdfs:subClassOf [ rdf:type owl:Restriction ;
+                                    owl:onProperty saref:isMeasurementOf ;
+                                    owl:allValuesFrom saref:FeatureOfInterest
+                                  ] ,
+                                  [ rdf:type owl:Restriction ;
                                     owl:onProperty saref:isMeasuredIn ;
                                     owl:allValuesFrom saref:UnitOfMeasure
                                   ] ,
@@ -904,7 +953,7 @@ saref:Profile rdf:type owl:Class ;
                                                                 )
                                                   ]
                               ] ;
-              rdfs:comment "A specification associated to a device to collect information about a certain Property (e.g., Energy) for optimizing its usage in the home, office or building in which the device is located. This specification is about a certain Property (saref:isAbout), can be calculated over a time span (saref:hasTime ) and can be associated to some costs (saref:hasPrice). An example is the Power Profile defined in the SAREF4ENER extension that can be associated to a device for optimizing the Energy efficiency in the home, office or building in which the device is located."@en ;
+              rdfs:comment "A specification associated to a device to collect information about a certain Property (e.g., Energy) for optimizing its usage in the home, office or building in which the device is located. This specification is about a certain Property (saref:isAbout), can be calculated over a time span (saref:hasTime) and can be associated to some costs (saref:hasPrice). An example is the Power Profile defined in the SAREF4ENER extension that can be associated to a device for optimizing the Energy efficiency in the home, office or building in which the device is located."@en ;
               rdfs:label "Profile"@en .
 
 
@@ -918,11 +967,15 @@ saref:Property rdf:type owl:Class ;
                                  owl:onProperty saref:isMeasuredByDevice ;
                                  owl:allValuesFrom saref:Device
                                ] ,
+                               [ rdf:type owl:Restriction ;
+                                 owl:onProperty saref:isPropertyOf ;
+                                 owl:allValuesFrom saref:FeatureOfInterest
+                               ] ,
                                [ rdf:type owl:Restriction ;
                                  owl:onProperty saref:relatesToMeasurement ;
                                  owl:allValuesFrom saref:Measurement
                                ] ;
-               rdfs:comment "Anything that can be sensed, measured or controlled in households, common public buildings or offices. We propose here a list of properties that are relevant for the purpose of SAREF, but this list can be extended."@en ;
+               rdfs:comment "A quality of a feature of interest that can be measured; an aspect of a feature of interest that is intrinsic to and cannot exist without the feature"@en ;
                rdfs:label "Property"@en .