A man wearing a yellow safety vest watches other workers on machinery.
The man is a basketball coach.
a basketball coach need not wear safety vest
exists e2 e1 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 p1 x1.(n_man(x1) & exists x2 x3.((x1 = x2) & n_coach(x2) & of(x2,x3) & n_basketball(x3)))