A man leans against the frame of a building.
The man is sitting on the step.
A man sitting does not lean against the building.
exists e1 x1 x2 x3.(n_frame(x2) & against(e1,x2) & of(x2,x3) & n_building(x3) & Actor(e1,x1) & v_lean(e1) & n_man(x1))
exists e1 x1 x2.(n_step(x2) & n_man(x1) & on(e1,x2) & Actor(e1,x1) & v_sit(e1))