A person guarding a hockey goal.
A person is talking to a referee.
A person guarding cannot be talking to the ref.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_guard(e1) & n_goal(x3) & of(x3,x4) & n_hockey(x4) & (x1 = x2) & n_person(x1))
exists e1 x1 x2.(to(e1,x2) & n_referee(x2) & Actor(e1,x1) & v_talk(e1) & n_person(x1))