A man and woman on a beach, jumping.
A man and a woman are jumping over a sand castle on the beach.
Just because a man and woman are jumping on a beach doesn't mean they are jumping over a sand castle.
exists e1 s1 x1 x2 x3 x4.(a_topic(s1) & on(s1,x3) & Actor(e1,x4) & v_jump(e1) & (x3 = x4) & n_beach(x3) & n_woman(x2) & n_man(x1) & subset_of(x2,s1) & subset_of(x1,s1))
exists e1 x1 x2 x3 x4 x5 x6.(n_beach(x6) & on(e1,x6) & over(e1,x4) & n_castle(x4) & of(x4,x5) & n_sand(x5) & Actor(e1,x1) & v_jump(e1) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_man(x2))