A person is riding a bike in a tunnel.
cow with bird on it
A cow is not a person.
exists e1 x1 x2 x3.(in(e1,x3) & n_tunnel(x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & n_person(x1))
exists x1 x2.(a_topic(x1) & with(x1,x2) & on(x2,x1) & n_thing(x1) & n_bird(x2) & n_cow(x1))