ATermAppl B = ATermUtils.makeTermAppl( "B" );
ATermAppl p = ATermUtils.makeTermAppl( "p" );
KnowledgeBase kb = new KnowledgeBase();
kb.addClass( A );
kb.addClass( B );
kb.addObjectProperty( p );
ATermAppl or1 = or( A, some( p, A ) );
ATermAppl or2 = or( B, some( p, B ) );