I think that the Area class refers to the s4city:AdministrativeArea one, which...

I think that the Area class refers to the s4city:AdministrativeArea one, which is already defined in SAREF4WEAR. So I remove it.

Also, the capacity is the capacity of a Facility (A place, amenity, or piece of equipment provided for a particular purpose.), but not of an Administrative area (An administrative division, unit, entity, area or region, also referred to as a subnational entity, constituent unit, or country subdivision, is a portion of a country or other region delineated for the purpose of administration.).

ontology/saref4wear.ttl

@@ -345,8 +345,7 @@ s4wear:followsPolicies rdf:type owl:DatatypeProperty ;
 
 ###  https://saref.etsi.org/saref4wear/hasCapacity
 s4wear:hasCapacity rdf:type owl:DatatypeProperty ;
-                   rdfs:domain s4city:Facility ,
-                               s4wear:Area ;
+                   rdfs:domain s4city:Facility ;
                    rdfs:range xsd:long .
 
 
@@ -630,10 +629,6 @@ s4wear:ActionFunction rdf:type owl:Class ;
 s4wear:ActuableObject rdf:type owl:Class .
 
 
-###  https://saref.etsi.org/saref4wear/Area
-s4wear:Area rdf:type owl:Class .
-
-
 ###  https://saref.etsi.org/saref4wear/Biometric
 s4wear:Biometric rdf:type owl:Class ;
                  rdfs:subClassOf s4wear:Information .