A man controls a large equipment board.
a man controlling equipment at work
Not all man controls a large equipment board at work.
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_control(e1) & n_board(x2) & of(x2,x3) & n_equipment(x3) & a_large(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & at(e1,x4) & n_work(x4) & Theme(e1,x3) & Actor(e1,x2) & v_control(e1) & n_equipment(x3) & (x1 = x2) & n_man(x1))