There is a restaurant and all the tables are empty.
No one is eating at the restaurant.
there is no one eating so the tables are empty
exists p1 x1 x4.(n_table(x4) & all x3.((x3 = x4) -> exists s1.(Theme(s1,x3) & a_empty(s1))) & exists x2.((x1 = x2) & n_restaurant(x2)))
exists x2.(n_restaurant(x2) & -exists e1 x1.(at(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_one(x1)))