Two hockey players compete on the ice.
They are playing baseball.
Hockey players do not play baseball simultaneously
exists e1 x1 x2 x3.(n_ice(x3) & on(e1,x3) & Actor(e1,x1) & v_compete(e1) & n_player(x1) & of(x1,x2) & n_hockey(x2) & card_eq_2(x1))
exists e1 x1 x2.(n_thing(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_baseball(x2))