diff --git a/ontology/saref4agri.ttl b/ontology/saref4agri.ttl
index 8345eb1d7dc7306b61b987edd91f1774cbb702fd..71b02f2bbf0f72e47e0f746ad6f82a8ae194f29f 100644
--- a/ontology/saref4agri.ttl
+++ b/ontology/saref4agri.ttl
@@ -187,7 +187,7 @@ foaf:member rdf:type owl:ObjectProperty ;
 
 ###  https://saref.etsi.org/saref4agri/contains
 s4agri:contains rdf:type owl:ObjectProperty ;
-  rdfs:comment "contains"@en ;
+  rdfs:comment "A relation to express that one object includes another object."@en ;
   rdfs:label "contains"@en ;
   rdfs:subPropertyOf geosp:sfContains ;
   owl:inverseOf s4agri:isContainedIn .
@@ -217,13 +217,13 @@ s4agri:hasMember rdf:type owl:ObjectProperty ;
 ###  https://saref.etsi.org/saref4agri/hasReceived
 s4agri:hasReceived rdf:type owl:ObjectProperty ;
       owl:inverseOf s4agri:receives ;
-  rdfs:comment "has received"@en ;
+  rdfs:comment "A relation to express that something has been obtained."@en ;
   rdfs:label "has received"@en .
 
 
 ###  https://saref.etsi.org/saref4agri/isContainedIn
 s4agri:isContainedIn rdf:type owl:ObjectProperty ;
-  rdfs:comment "is contained in"@en ;
+  rdfs:comment "A relation that states inclusiveness."@en ;
   rdfs:label "is contained in"@en .
 
 
@@ -243,7 +243,7 @@ s4agri:isLocatedIn rdf:type owl:ObjectProperty ;
 
 ###  https://saref.etsi.org/saref4agri/isLocationOf
 s4agri:isLocationOf rdf:type owl:ObjectProperty ;
-  rdfs:comment "is location of"@en ;
+  rdfs:comment "The physical location which locates a saref4agri entity."@en ;
   rdfs:label "is location of"@en .
 
 
@@ -255,7 +255,7 @@ s4agri:isMemberOf rdf:type owl:ObjectProperty ;
 
 ###  https://saref.etsi.org/saref4agri/managesFarm
 s4agri:managesFarm rdf:type owl:ObjectProperty ;
-  rdfs:comment "manages farm"@en ;
+  rdfs:comment "A relation to represent the person or company that supervises a farm."@en ;
   rdfs:label "manages farm"@en .
 
 
@@ -497,8 +497,7 @@ s4agri:Deployment rdf:type owl:Class ;
       owl:onProperty s4agri:isDeployedAtSpace ;
       owl:someValuesFrom geosp:SpatialObject
     ] ;
-  rdfs:comment "Deployment"@en ,
-                         "The scenario, including temporal and spatial information, in which the systems and devices are installed."@en ;
+  rdfs:comment "The scenario, including temporal and spatial information, in which the systems and devices are installed."@en ;
   rdfs:label "Deployment"@en .
 
 
@@ -549,14 +548,14 @@ s4agri:Farmer rdf:type owl:Class ;
 ###  https://saref.etsi.org/saref4agri/MilkingSensor
 s4agri:MilkingSensor rdf:type owl:Class ;
   rdfs:subClassOf saref:Sensor ;
-  rdfs:comment "Milking sensor"@en ;
+  rdfs:comment "A class to describe an animal milking sensor."@en ;
   rdfs:label "Milking sensor"@en .
 
 
 ###  https://saref.etsi.org/saref4agri/MovementActivitySensor
 s4agri:MovementActivitySensor rdf:type owl:Class ;
   rdfs:subClassOf saref:Sensor ;
-  rdfs:comment "Movement activity sensor"@en ;
+  rdfs:comment "A class to describe a motion sensor."@en ;
   rdfs:label "Movement activity sensor"@en .
 
 
@@ -574,7 +573,7 @@ s4agri:Parcel rdf:type owl:Class ;
 ###  https://saref.etsi.org/saref4agri/Platform
 s4agri:Platform rdf:type owl:Class ;
   rdfs:subClassOf sosa:Platform ;
-  rdfs:comment "Platform"@en ;
+  rdfs:comment "A Platform is an entity that hosts other entities, particularly Sensors, Actuators, Samplers, and other Platforms (definition taken from http://www.w3.org/ns/sosa/Platform)"@en ;
   rdfs:label "Platform"@en .
 
 
@@ -602,7 +601,7 @@ s4agri:SoilTensiometer rdf:type owl:Class ;
 ###  https://saref.etsi.org/saref4agri/Thermometer
 s4agri:Thermometer rdf:type owl:Class ;
   rdfs:subClassOf saref:Sensor ;
-  rdfs:comment "Thermometer"@en ;
+  rdfs:comment "A class to describe a sensor that measures temperature."@en ;
   rdfs:label "Thermometer"@en .
 
 
@@ -616,14 +615,14 @@ s4agri:WateringGun rdf:type owl:Class ;
 ###  https://saref.etsi.org/saref4agri/WateringSystem
 s4agri:WateringSystem rdf:type owl:Class ;
   rdfs:subClassOf ssn:System ;
-  rdfs:comment "Watering system"@en ;
+  rdfs:comment "A class to describe a system that dispenses or irrigates water."@en ;
   rdfs:label "Watering system"@en .
 
 
 ###  https://saref.etsi.org/saref4agri/WateringValve
 s4agri:WateringValve rdf:type owl:Class ;
   rdfs:subClassOf saref:Actuator ;
-  rdfs:comment "Watering valve"@en ;
+  rdfs:comment "A class to describe an actuator for dispensing water."@en ;
   rdfs:label "Watering valve"@en .
 
 
@@ -631,14 +630,14 @@ s4agri:WateringValve rdf:type owl:Class ;
 s4agri:WeatherStation rdf:type owl:Class ;
   rdfs:subClassOf ssn:System ,
                                 saref:Sensor ;
-  rdfs:comment "A sensor o system that measure weather conditions."@en ;
+  rdfs:comment "A sensor or system that measure weather conditions."@en ;
   rdfs:label "Weather station"@en .
 
 
 ###  https://saref.etsi.org/saref4agri/WeightSensor
 s4agri:WeightSensor rdf:type owl:Class ;
   rdfs:subClassOf saref:Sensor ;
-  rdfs:comment "Weight sensor"@en ;
+  rdfs:comment "A class to describe a sensor that measures mass."@en ;
   rdfs:label "Weight sensor"@en .