A man standing at a railing overlooking a building in the background.
A man is sitting at a desk
In sentence 1 the man is standing. In sentence 2 a man is sitting. It is not possible to sit and stand at the same time.
exists e1 x1 x2 x3 x4 x5 x6.(n_background(x6) & a_topic(x1) & at(x1,x3) & Theme(e1,x5) & Actor(e1,x4) & v_overlook(e1) & in(x5,x6) & n_building(x5) & (x3 = x4) & n_rail(x3) & n_standing(x1) & of(x1,x2) & n_man(x2))
exists e1 x1 x2.(at(e1,x2) & n_desk(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))