A man wearing a yellow safety vest watches other workers on machinery.
The man is watching coworkers.
man watches other workers is same as man is watching coworkers
exists e1 e2 s1 x1 x2 x3 x4 x5 x6 x7.(n_worker(x6) & on(e2,x7) & n_machinery(x7) & Theme(e2,x5) & Actor(e2,x1) & v_watch(e2) & -(x5 = x6) & n_worker(x5) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_vest(x3) & of(x3,x4) & n_safety(x4) & a_yellow(s1) & Theme(s1,x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_coworker(x2))