Five people stand in the grass with three dogs.
Nobody is standing
If nobody is standing it is impossible for five people to be standing.
exists e1 x1 x2 x3.(n_grass(x2) & in(e1,x2) & with(x2,x3) & n_dog(x3) & card_eq_3(x3) & Actor(e1,x1) & v_stand(e1) & n_people(x1) & card_eq_5(x1))
-exists e1 x1.(Actor(e1,x1) & v_stand(e1) & n_person(x1))