Three people are sitting on the couch and one person is sitting on the floor.
People are sitting inside.
Three people are sitting on the couch and one person is sitting on the floor is possible inside only
exists e2 e1 x1 x2 x3 x4.(n_floor(x4) & n_couch(x2) & on(e2,x4) & Actor(e2,x3) & v_sit(e2) & n_person(x3) & card_eq_1(x3) & on(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_3(x1))
exists e1 s1 x1.(a_inside(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1) & n_people(x1))