A man is lowered on a pulley in front of a building.
A man is being lowered by a pulley.
Lowered on a pulley is equivalent to being lowered by a pulley.
exists e1 x1 x2 x3 x4.(in(e1,x3) & of(x3,x4) & n_building(x4) & n_front(x3) & on(e1,x2) & n_pulley(x2) & Theme(e1,x1) & v_lower(e1) & n_man(x1))
exists e1 x1 x2.(Actor(e1,x2) & n_pulley(x2) & Theme(e1,x1) & v_lower(e1) & n_man(x1))