A man sitting on a green chair in an airport.
A man is at the airport.
At the airport is a rephrase of in an airport.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x4) & n_airport(x4) & on(e1,x3) & n_chair(x3) & a_green(s1) & Theme(s1,x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1))
exists p1 x1 x2.(n_airport(x2) & at(x1,x2) & n_man(x1))