Two hockey players compete on the ice.
They are wearing jerseys.
Just because they are competing does not mean that the players are wearing jerseys. It may be a pick up game where they are wearing normal shirts.
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_wear(e1) & n_jersey(x2))