A man leans against a statue in front of a building.
a man on leaning on a statue
against a statue is a rephrasing of on a statue.
exists e1 x1 x2 x3 x4.(against(e1,x2) & in(x2,x3) & of(x3,x4) & n_building(x4) & n_front(x3) & n_statue(x2) & Actor(e1,x1) & v_lean(e1) & n_man(x1))
exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_statue(x3) & Actor(e1,x2) & v_lean(e1) & (x1 = x2) & n_man(x1))