/** * creates an object property assertion (without checking any vocabulary) * * @return null if it is top object property ([O4], @see OntologyFactoryImpl) * @throws InconsistentOntologyException if it is the bottom object property ([O4], @see OntologyFactoryImpl) */ @Override public ObjectPropertyAssertion createObjectPropertyAssertion(String propertyName, ObjectConstant o1, ObjectConstant o2) throws InconsistentOntologyException { ObjectPropertyExpression ope = new ObjectPropertyExpressionImpl(propertyName); return ofac.createObjectPropertyAssertion(ope, o1, o2); }