diff --git a/ontology/saref.ttl b/ontology/saref.ttl
index 2169cac42716d293369eb181b8a2a2b70ddea86e..0423f78b589de790dfbb4c9cef3fa37224d67936 100644
--- a/ontology/saref.ttl
+++ b/ontology/saref.ttl
@@ -60,13 +60,13 @@ saref:controlsProperty rdf:type owl:ObjectProperty ;
 ###  https://saref.etsi.org/hasCommand
 saref:hasCommand rdf:type owl:ObjectProperty ;
                  owl:inverseOf saref:isCommandOf ;
-                 rdfs:comment "A relationship between an entity (such as a function) and a command"@en ;
+                 rdfs:comment "A relationship between a function and a command"@en ;
                  rdfs:label "has command"@en .
 
 
 ###  https://saref.etsi.org/hasFunction
 saref:hasFunction rdf:type owl:ObjectProperty ;
-                  rdfs:comment "A relationship identifying the type of function of a device"@en ;
+                  rdfs:comment "A relationship identifying the function of a device"@en ;
                   rdfs:label "has function"@en .
 
 
@@ -90,7 +90,7 @@ saref:hasPrice rdf:type owl:ObjectProperty ;
 
 ###  https://saref.etsi.org/hasProfile
 saref:hasProfile rdf:type owl:ObjectProperty ;
-                 rdfs:comment "A relationship associating a profile to a certain entity (e.g., a device)"@en ;
+                 rdfs:comment "A relationship associating a profile to a certain device"@en ;
                  rdfs:label "has profile"@en .
 
 
@@ -175,7 +175,7 @@ saref:isOfferedBy rdf:type owl:ObjectProperty ;
 
 ###  https://saref.etsi.org/isUsedFor
 saref:isUsedFor rdf:type owl:ObjectProperty ;
-                rdfs:comment "A relationship specifying the purpose for which a device is used for (e.g., controlling a Commodity)"@en ;
+                rdfs:comment "A relationship specifying the commodity for which a device is used for"@en ;
                 rdfs:label "is used for"@en .
 
 
@@ -351,7 +351,7 @@ saref:Commodity rdf:type owl:Class ;
 ###  https://saref.etsi.org/Currency
 saref:Currency rdf:type owl:Class ;
                rdfs:subClassOf saref:UnitOfMeasure ;
-               rdfs:comment "The unit of measure for price"@en ;
+               rdfs:comment "The class of units of measure for price"@en ;
                rdfs:label "Currency"@en .
 
 
@@ -588,7 +588,7 @@ saref:IlluminanceUnit rdf:type owl:Class ;
 ###  https://saref.etsi.org/LevelControlFunction
 saref:LevelControlFunction rdf:type owl:Class ;
                            rdfs:subClassOf saref:ActuatingFunction ;
-                           rdfs:comment "An actuating function that allows to do level adjustments of an actuator in a certain range (e.g., 0%-100%), such as dimming a light or set the speed of an electric motor. "@en ;
+                           rdfs:comment "An actuating function that allows to do level adjustments of a property in a certain range (e.g., 0%-100%), such as dimming a light in a room or setting the speed of an electric motor. "@en ;
                            rdfs:label "Level control function"@en .
 
 
@@ -910,7 +910,7 @@ saref:Profile rdf:type owl:Class ;
                                                                 )
                                                   ]
                               ] ;
-              rdfs:comment "A specification associated to a device to collect information about a certain Property (e.g., Energy) or Commodity (e.g.Water) for optimizing its usage in the home, office or building in which the device is located. This specification is about a certain Property or Commodity (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 .