public Object getMatrixValue(OWLObject entity, Object prop) { if (entity instanceof OWLIndividual) { if (prop instanceof OWLObjectProperty) { return helper.getRelationships((OWLIndividual) entity, (OWLObjectProperty) prop); } else if (prop instanceof OWLDataProperty) { return helper.getRelationships((OWLIndividual) entity, (OWLDataProperty) prop); } else { return super.getMatrixValue(entity, prop); } } return null; }