kb.addEquivalentClass( B, or( B, not( B ) ) );
kb.addSubClass( C, A );
assertTrue( kb.isConsistent() );
kb.classify();
assertTrue( kb.isEquivalentClass( A, TOP ) );
assertTrue( kb.isEquivalentClass( B, TOP ) );
assertFalse( kb.isEquivalentClass( C, TOP ) );
}