Added owl:Class ClassOfActivity to represent Activity Objective and its members

@@ -204,12 +204,23 @@
       owl:onProperty :hasMaterialOrderStatus ;
     ] ;
 .
+:ActivityObjective
+  rdf:type rdfs:Class ;
+  rdfs:label "Activity objective"^^xsd:string ;
+  rdfs:subClassOf :ClassOfActivity ;
+.
 :ActivityStatus
   rdf:type owl:Class ;
   rdfs:comment "A Status of an Activity (which can have predefined enumeration values)."^^xsd:string ;
   rdfs:label "Activity status"^^xsd:string ;
   rdfs:subClassOf :Status ;
 .
+:ActivityToMaintainBusinessAsUsual
+  rdf:type :ActivityObjective ;
+  rdf:type owl:Class ;
+  rdfs:label "Activity to Maintain Business as Usual"^^xsd:string ;
+  rdfs:subClassOf :Activity ;
+.
 :AfterShutdown
   rdf:type :ShutdownPhase ;
   rdfs:label "After shutdown"^^xsd:string ;
@@ -503,6 +514,11 @@
   rdf:type :SystemDescriptor ;
   rdfs:label "Change over"^^xsd:string ;
 .
+:ClassOfActivity
+  rdf:type rdfs:Class ;
+  rdfs:label "Class of activity"^^xsd:string ;
+  rdfs:subClassOf owl:Class ;
+.
 :ClosingDown
   rdf:type :ShutdownPhase ;
   rdfs:label "Closing down"^^xsd:string ;