Referee on left interrupts hockey match
The match stopped abruptly because of the referee
The match could have stopped abruptly due to an injury, and not because of the referee
exists s1 x1 x2 x3 x4.(a_topic(x1) & on(x1,x2) & n_match(x2) & of(x2,x4) & n_hockey(x4) & of(x2,x3) & n_interrupt(x3) & a_left(s1) & Theme(s1,x2) & n_referee(x1))
exists e1 s1 x1 x2.(n_referee(x2) & n_match(x1) & of(e1,x2) & r_because(e1) & a_abruptly(s1) & Manner(e1,s1) & Actor(e1,x1) & v_stop(e1))