Two girls riding down the street on unicycles.
Two girls sharing a piece of cake.
One can not be sharing cake and riding unicycles simultaneously.
exists e1 x1 x2 x3 x4.(n_street(x3) & a_topic(x1) & on(e1,x4) & n_unicycle(x4) & down(e1,x3) & Actor(e1,x2) & v_ride(e1) & (x1 = x2) & n_girl(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_share(e1) & of(x3,x4) & n_cake(x4) & n_piece(x3) & (x1 = x2) & n_girl(x1) & card_eq_2(x1))