Three men working with a locomotive.
Three men are at work
Men working with a locomotive must be at work.
exists e1 x1 x2 x3.(a_topic(x1) & with(e1,x3) & n_locomotive(x3) & Actor(e1,x2) & v_work(e1) & (x1 = x2) & n_man(x1) & card_eq_3(x1))
exists p1 x1.(exists x2.(at(x1,x2) & n_work(x2)) & n_man(x1) & card_eq_3(x1))