A person is in the air on a bike near a river.
the guy is cooking
The person cannot be on a bike and cooking at the same time.
exists p1 x1 x2.(n_air(x2) & exists x3 x4.(in(x1,x2) & on(x2,x3) & near(x3,x4) & n_river(x4) & n_bike(x3)) & n_person(x1))
exists e1 x1.(n_guy(x1) & Actor(e1,x1) & v_cook(e1))