Two people are standing on a cliff
The two people are flying in a hot-air balloon.
standing is not flying.
exists e1 x1 x2.(on(e1,x2) & n_cliff(x2) & Actor(e1,x1) & v_stand(e1) & n_people(x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(n_people(x1) & card_eq_2(x1) & in(e1,x2) & n_balloon(x2) & a_hot-air(s1) & Theme(s1,x2) & Actor(e1,x1) & v_fly(e1))