RequestMessage( CreateKB(Attribute(kb )) CreateKB(Attribute(kb )) Tell( Attribute(kb ) owl.SubClassOf( owl:Thing)) CreateKB(Attribute(kb )) Tell( Attribute(kb ) owl.SubClassOf( owl:Thing) owl.SubClassOf( ) owl.SubClassOf( )) CreateKB(Attribute(kb )) Tell( Attribute(kb ) owl.EquivalentClasses( owl:Thing) owl.EquivalentClasses( owl:Nothing) owl.SubClassOf( owl:Thing)) GetSubClassHierarchy( Attribute(kb )) GetSubClassHierarchy( Attribute(kb )) GetSubClassHierarchy( Attribute(kb )) GetSubClassHierarchy( Attribute(kb )) ReleaseKB( Attribute(kb )) ReleaseKB( Attribute(kb )) ReleaseKB( Attribute(kb )) ReleaseKB( Attribute(kb )))