two men cleaning the windows of a tall building
A man is mowing the grass.
A man cannot be cleaning the windows and mowing the grass at the same time.
exists e1 s1 x1 x2 x3 x4.(n_window(x3) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_clean(e1) & of(x3,x4) & n_building(x4) & a_tall(s1) & Theme(s1,x4) & (x1 = x2) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_grass(x2) & Theme(e1,x2) & Actor(e1,x1) & v_mow(e1) & n_man(x1))