A couple walking hand and hand by the waves on the beach.
Three men are looking for seashells on the beach.
A couple and three men are different.
exists e1 x1 x2 x3 x4 x5 x6 x7.(n_beach(x7) & n_wave(x6) & a_topic(x1) & on(e1,x7) & by(e1,x6) & Theme(e1,x3) & Actor(e1,x2) & v_walk(e1) & n_hand(x5) & n_hand(x4) & subset_of(x5,x3) & subset_of(x4,x3) & (x1 = x2) & n_couple(x1))
exists e1 x1 x2 x3.(n_beach(x3) & for(e1,x2) & on(x2,x3) & n_seashell(x2) & Actor(e1,x1) & v_look(e1) & n_man(x1) & card_eq_3(x1))