Man and boy playing chess on the counter.
Two people play checkers.
Chess and checkers are different games.
exists s1 x1 x2 x3 x4 x5.(n_counter(x5) & a_topic(s1) & subset_of(x2,s1) & on(x2,x5) & n_chess(x2) & of(x2,x4) & n_playing(x4) & of(x2,x3) & n_boy(x3) & subset_of(x1,s1) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_checkers(x2) & n_people(x1) & card_eq_2(x1))