A man in an orange vest is working on a train.
The man is fixing the train's window.
Working on a train does not imply fixing the window.
exists e1 x1 x2 x3 x4.(on(e1,x4) & n_train(x4) & Actor(e1,x1) & v_work(e1) & in(x1,x2) & n_vest(x2) & of(x2,x3) & n_orange(x3) & n_man(x1))
exists e1 x1 x2 x3.(n_window(x3) & of(x3,x2) & n_train(x2) & n_man(x1) & Theme(e1,x3) & Actor(e1,x1) & v_fix(e1))