A man is sitting on a platform next to a building ledge.
There is a platform next to the building ledge.
A man sitting on a platform indicates that there is a platform there
exists e1 x1 x2 x3 x4 x5.(on(e1,x2) & to(x3,x4) & n_ledge(x4) & of(x4,x5) & n_building(x5) & next(x2,x3) & n_thing(x3) & n_platform(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
exists p1 x1 x4 x5.(n_ledge(x4) & of(x4,x5) & n_building(x5) & exists x2 x3.((x1 = x2) & to(x3,x4) & next(x2,x3) & n_thing(x3) & n_platform(x2)))