A man in an airport waves at the camera.
A man is sledding down the hill.
A man cannot go sledding at an airport
exists x1 x2 x3 x4.(n_camera(x4) & a_topic(x1) & in(x1,x2) & at(x2,x4) & n_wave(x2) & of(x2,x3) & n_airport(x3) & n_man(x1))
exists e1 s1 x1 x2.(n_hill(x2) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_sled(e1) & n_man(x1))