assertIteratorValues(model.listObjectsOfProperty(A, RDFS.subClassOf), B, C, OWL.Thing);
assertTrue(graph.isClassified());
model.remove(a, RDF.type, A);
graph.prepare();
assertTrue(graph.isClassified());
assertFalse(model.contains(a, RDF.type, C));
assertTrue(model.contains(b, RDF.type, C));
assertIteratorValues(model.listObjectsOfProperty(A, RDFS.subClassOf), B, C, OWL.Thing);
assertTrue(graph.isClassified());