They are playing ice-hockey.
They play hockey to pass the time.
Playing ice-hockey could be to pass the time.
exists e1 x1 x2.(n_thing(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_ice-hockey(x2))
exists e1 p1 x1 x2 x3.(n_time(x3) & n_thing(x2) & Topic(e1,p1) & exists e2.(Theme(e2,x3) & Actor(e2,x1) & v_pass(e2)) & Theme(e1,x1) & Actor(e1,x2) & v_play(e1) & n_hockey(x1) & n_thing(x1))