assertTrue( copyKB.isType( a, D ) );
assertTrue( copyKB.isType( b, E ) );
assertTrue( copyKB.isSubClassOf( C, D ) );
// change the copy KB's ABox
copyKB.removeType( a, C );
// copy should NOT be in ConsistencyDone state anymore
// but original KB is still in ConsistencyDone state
assertFalse( copyKB.isConsistencyDone() );
assertTrue( kb.isConsistencyDone() );