A girls is jumping in the sand.
The girl is not inside the building.
A girls refer to the girl.
exists e1 x1 x2.(n_sand(x2) & in(e1,x2) & Actor(e1,x1) & v_jump(e1) & n_girl(x1))
exists x1 x2.(n_building(x2) & n_girl(x1) & -exists p1.inside(x1,x2))