@Override
public void visit(OWLClassAssertionAxiom axiom) {
OWLIndividual ind = axiom.getIndividual();
// Do not accept anonymous registry items.
if (ind.isAnonymous()) return;
IRI iri = ind.asOWLNamedIndividual().getIRI();
int[] scores = checkScores(iri);
OWLClassExpression type = axiom.getClassExpression();
// If the type is stated to be a library, increase its library score.
if (cRegistryLibrary.equals(type)) {
scores[0]++;