subclassed models relatioship

Author: kityansiu

RACK-Ontology/ontology/MODEL.sadl

@@ -23,3 +23,4 @@ import "http://arcos.rack/PROV-S".
 MODEL (note "A physical, mathematical, or otherwise logical representation of a system, entity, phenomenon, or process")
     is a type of ENTITY.
     models (note "The thing being modeled") describes MODEL with a single value of type THING.
+    models is a type of wasDerivedFrom.