Man flying through the air on skis over a mountain.
The man is riding a horse.
The man is either flying in the air or riding on a horse. He cannot do both simultaneously.
exists e1 x1 x2 x3 x4 x5.(n_air(x3) & a_topic(x1) & over(e1,x5) & n_mountain(x5) & on(e1,x4) & n_ski(x4) & through(e1,x3) & Actor(e1,x2) & v_fly(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_horse(x2))