Facility associated with production flow is handled better (esp. field and wellb…

…ore) , but some types of facility are still not supported.

@@ -29,3 +29,9 @@ ep-prodorg:WholeLifePerson
       rdf:type owl:Class ;
       rdfs:label "whole life person"^^xsd:string ;
       rdfs:subClassOf ep-prodorg:Person .
+
+ep-prodorg:owner
+      rdf:type owl:ObjectProperty ;
+      rdfs:domain owl:Thing ;
+      rdfs:label "owner"^^xsd:string ;
+      rdfs:range ep-prodorg:PersonOrOrganization .