Two children standing on a wall.
Two children are standing outdoors on a wall.
Not all walls are outdoors.
exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_wall(x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_child(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(on(e1,x3) & n_wall(x3) & Time(e1,x2) & n_outdoors(x2) & Actor(e1,x1) & v_stand(e1) & n_child(x1) & card_eq_2(x1))