three people sit in a cave.
Three people are sitting on a bench in the park
The people can be either in a cave or in a bench.
exists e1 x1 x2.(in(e1,x2) & n_cave(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_3(x1))
exists e1 x1 x2 x3.(n_park(x3) & in(e1,x3) & on(e1,x2) & n_bench(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_3(x1))