Two men are working together on a ladder.
The ladder is leaning against a wall.
Just because men are working on a ladder doesn't mean that the ladder is leaning against a wall.
exists e1 s1 x1 x2.(on(e1,x2) & n_ladder(x2) & a_together(s1) & Manner(e1,s1) & Actor(e1,x1) & v_work(e1) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_ladder(x1) & against(e1,x2) & n_wall(x2) & Actor(e1,x1) & v_lean(e1))