diff --git a/ontology/saref4ehaw.ttl b/ontology/saref4ehaw.ttl
index 7385a5ad055460a55778edc6483625941bfce029..c1533f9b792f48a10cd648129ff166061737c01b 100644
--- a/ontology/saref4ehaw.ttl
+++ b/ontology/saref4ehaw.ttl
@@ -129,7 +129,7 @@ s4ehaw:hasActivity rdf:type owl:ObjectProperty ;
 s4ehaw:hasAgeCategory rdf:type owl:ObjectProperty ;
                       rdfs:domain s4ehaw:HealthActor ;
                       rdfs:range s4ehaw:AgeCategory;
-                      rdfs:comment "The age group of a health actor, i.e. old or young."@en ;
+                      rdfs:comment "The age group of a health actor, e.g. old or young."@en ;
                       rdfs:label "has age category"@en .
 
 
@@ -138,7 +138,7 @@ s4ehaw:hasBanApplicationDomain rdf:type owl:ObjectProperty ;
                                rdfs:domain s4ehaw:Ban ;
                                rdfs:range s4ehaw:BanApplicationDomain ;
                                rdfs:comment "The BAN application domain - healthcare, telemedicine, assisted living, sport training, pervasive computing, safety and emergency... -."@en ;
-                               rdfs:label "has ban application domain"@en .
+                               rdfs:label "has BAN application domain"@en .
 
 
 ###  https://saref.etsi.org/saref4ehaw/hasBanCommunicationType
@@ -185,7 +185,7 @@ s4ehaw:hasData rdf:type owl:ObjectProperty ;
 s4ehaw:hasDeviceCharacteristic rdf:type owl:ObjectProperty ;
                      rdfs:domain s4ehaw:HealthDevice ;
                      rdfs:range s4ehaw:DeviceCharacteristic ;
-                     rdfs:comment "A health device has device characteristic describing the physical characteristics of the health device."@en ;
+                     rdfs:comment "A health device has device characteristic describing the physical characteristics of the health device, e.g. its dimensions."@en ;
                      rdfs:label "has device characteristic"@en .
 
 
@@ -453,7 +453,7 @@ s4ehaw:deviceCharacteristicName rdf:type owl:DatatypeProperty ;
 s4ehaw:dimension rdf:type owl:DatatypeProperty ;
                  rdfs:domain s4ehaw:DeviceCharacteristic ;
                  rdfs:range xsd:string ;
-                 rdfs:comment "The dimension of the device i.e. height*weight*length."@en ;
+                 rdfs:comment "The dimension of the device i.e. height*weight*length string."@en ;
                  rdfs:label "dimension"@en .
 
 
@@ -560,7 +560,7 @@ s4ehaw:hasGender rdf:type owl:DatatypeProperty ;
 s4ehaw:banGeolocation rdf:type owl:DatatypeProperty ;
                       rdfs:domain s4ehaw:Ban ;
                       rdfs:range xsd:string ;
-                      rdfs:comment "The geolocation of the BAN, when available and needed, shall be given relatively to the current location - geolocation as standardized ISO 6709 - of the patient wearing the BAN."@en ;
+                      rdfs:comment "The geolocation of the BAN, when available and needed, shall be given relatively to the current location - geolocation as standardized ISO 6709, e.g. +40.75-074.00/  - of the patient wearing the BAN."@en ;
                       rdfs:label "BAN geolocation"@en .
 
 
@@ -669,7 +669,7 @@ s4ehaw:lastName rdf:type owl:DatatypeProperty ;
 s4ehaw:latency rdf:type owl:DatatypeProperty ;
                rdfs:domain s4ehaw:MeasurementFunction ;
                rdfs:range xsd:duration ;
-               rdfs:comment "The latency is the time interval between the stimulation and response of a measurement function."@en ;
+               rdfs:comment "The latency is the time interval between the stimulation and response of a measurement function (in ms)."@en ;
                rdfs:label "latency"@en .
 
 
@@ -765,7 +765,7 @@ s4ehaw:powerSourceType rdf:type owl:DatatypeProperty ;
 s4ehaw:precision rdf:type owl:DatatypeProperty ;
                  rdfs:domain s4ehaw:MeasurementFunction ;
                  rdfs:range xsd:float ;
-                 rdfs:comment "Precision of a measurement function is the uncertainty of the measured data."@en ;
+                 rdfs:comment "Precision refers to the degree of reproducibility of a measured quantity (when the same quantity is measured several times how close are the measurements from each other), in percent."@en ;
                  rdfs:label "precision"@en .
 
 
@@ -872,7 +872,7 @@ s4ehaw:Activity rdf:type owl:Class ;
 
 ###  https://saref.etsi.org/saref4ehaw/AgeCategory
 s4ehaw:AgeCategory rdf:type owl:Class ;
-                   rdfs:comment "The age group of a health actor, i.e. old or young."@en ;
+                   rdfs:comment "The age group of a health actor, e.g. old or young."@en ;
                    rdfs:label "Age category"@en .