if (!isOWL2RLSubClassExpression(axiom.getSubClass())) {
violations.add(new UseOfNonSubClassExpression(
getCurrentOntology(), axiom, axiom.getSubClass()));
}
if (!isOWL2RLSuperClassExpression(axiom.getSuperClass())) {
violations.add(new UseOfNonSuperClassExpression(
getCurrentOntology(), axiom, axiom.getSuperClass()));
}
}