A person is squatting with a yellow umbrella on a beach.
The person is not standing upright.
A person can do squatting with an yellow umbrella only if he is not standing upright.
exists e1 s1 x1 x2 x3.(with(e1,x2) & on(x2,x3) & n_beach(x3) & n_umbrella(x2) & a_yellow(s1) & Theme(s1,x2) & Actor(e1,x1) & v_squat(e1) & n_person(x1))
exists x1.(n_person(x1) & -exists e1 x2.(Time(e1,x2) & n_upright(x2) & Actor(e1,x1) & v_stand(e1)))