http://www.estrellaproject.org/lkif-core/role.owl#Epistemic_Role
Class role:Epistemic_Role

Class Axioms
rdfs:subClassOf role:Role role:played_by all top:Mental_Object role:played_by some top:Mental_Object

Other Properties
rdf:type owl:Class

References
as rdfs:subClassOf (expression:Exception, expression:Cause, expression:Expectation, expression:Evidence, expression:Assumption, expression:Fact, expression:Observation, expression:Reason, rules:Negated_Atom, rules:Rule, rules:Atom)