A small dog lands on a big dog trying to get a disc.
The small dog is flying.
the small dog lands on big dog is not flying so thats false.
exists e1 p1 s1 s2 x1 x2 x3 x4.(a_topic(x1) & on(x1,x3) & Topic(e1,p1) & Actor(e1,x4) & v_try(e1) & exists e2 x5.(Theme(e2,x5) & Actor(e2,x4) & v_get(e2) & n_disc(x5)) & (x3 = x4) & n_dog(x3) & a_big(s2) & Theme(s2,x3) & n_land(x1) & of(x1,x2) & n_dog(x2) & a_small(s1) & Theme(s1,x1))
exists e1 s1 x1.(n_dog(x1) & a_small(s1) & Theme(s1,x1) & Actor(e1,x1) & v_fly(e1))