A person is sleeping at an airport with a hat on their head.
Everyone at the airport is awake.
If everyone at the airport is awake, no one can be sleeping.
exists e1 x1 x2 x3 x4.(at(e1,x2) & with(x2,x3) & on(x3,x4) & n_head(x4) & of(x4,x1) & n_thing(x1) & n_hat(x3) & n_airport(x2) & Actor(e1,x1) & v_sleep(e1) & n_person(x1))
exists x2.(n_airport(x2) & all x1.(n_person(x1) -> exists s1.(Theme(s1,x1) & a_awake(s1) & at(x1,x2))))