Two men are participating in a race.
Two guys are playing golf.
A race and golf are different activities.
exists e1 x1 x2.(in(e1,x2) & n_race(x2) & Actor(e1,x1) & v_participate(e1) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_golf(x2) & n_guy(x1) & card_eq_2(x1))