Three people are sitting down to rest.
No one is sitting
There cannot be both three people and no one sitting.
exists e1 s1 x1 x2.(to(e1,x2) & n_rest(x2) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_3(x1))
-exists e1 x1.(Actor(e1,x1) & v_sit(e1) & n_one(x1))