Change data factory implementation to check arguments to getOWLObject…

…InverseOf to make sure that it is an OWLObjectProperty, and not an OWLObjectInverseOf.

The method signature should be changed instead in version 5

impl/src/main/java/uk/ac/manchester/cs/owl/owlapi/OWLDataFactoryImpl.java

@@ -1556,6 +1556,9 @@ public OWLSymmetricObjectPropertyAxiom getOWLSymmetricObjectPropertyAxiom(
     public OWLObjectInverseOf getOWLObjectInverseOf(
             OWLObjectPropertyExpression property) {
         checkNotNull(property, "property cannot be null");
+        if(!(property instanceof OWLObjectProperty)) {
+            throw new IllegalArgumentException("ObjectInverseOf can only be applied to Object Properties");
+        }
         return new OWLObjectInverseOfImpl(property);
     }