Three men work behind a short wall.
group of men gathered
Either group of men  work or just gathered
exists e1 s1 x1 x2.(behind(e1,x2) & n_wall(x2) & a_short(s1) & Theme(s1,x2) & Actor(e1,x1) & v_work(e1) & n_man(x1) & card_eq_3(x1))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & v_gather(e1) & (x1 = x3) & of(x1,x2) & n_man(x2) & n_group(x1))