The girls is jumping into the air on the beach.
She is not standing on sand.
If she is not standing on sand, she might not be on the beach.
exists e1 x1 x2 x3.(n_beach(x3) & n_air(x2) & n_girl(x1) & on(e1,x3) & into(e1,x2) & Actor(e1,x1) & v_jump(e1))
exists x1.(n_female(x1) & -exists e1 x2.(on(e1,x2) & n_sand(x2) & Actor(e1,x1) & v_stand(e1)))