Two people in winter clothing sit on a bus stop bench.
There are no people sitting on the bench.
If there are two people, then it would be incorrect to say that there are no people.
exists e1 x1 x2 x3 x4 x5 x6.(on(e1,x4) & n_bench(x4) & of(x4,x6) & n_stop(x6) & of(x4,x5) & n_bus(x5) & Actor(e1,x1) & v_sit(e1) & in(x1,x2) & n_clothing(x2) & of(x2,x3) & n_winter(x3) & n_people(x1) & card_eq_2(x1))
exists p1 x1 x4.(n_bench(x4) & -exists e1 x2 x3.((x1 = x2) & on(e1,x4) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_people(x2)))