The girls is jumping into the air on the beach.
There are footprints all over the beach.
You can not infer there are footprints.
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 p1 x1 x2.(n_beach(x2) & r_all(p1) & over(p1,x2) & exists x3.((x1 = x3) & n_footprint(x3)))