A person in the air holding on to a bicycle.
A person is on the ground in a car.
One can either be in the air or on the ground, not both. A car cannot be a bicycle.
exists e1 x1 x2 x3 x4.(n_air(x2) & a_topic(x1) & in(x1,x2) & r_on(e1) & to(e1,x4) & n_bicycle(x4) & Actor(e1,x3) & v_hold(e1) & (x2 = x3) & n_person(x1))
exists p1 x1 x2 x3.(n_ground(x3) & in(p1,x2) & n_car(x2) & on(x1,x3) & n_person(x1))