Three people with their back turned are standing inside a building.
three people turn their backs inside the building
their backs turned and they turn their backs is the same
exists e2 e1 x1 x2 x3 x4.(inside(e2,x4) & n_building(x4) & Actor(e2,x1) & v_stand(e2) & Theme(e1,x3) & v_turn(e1) & (x1 = x3) & with(x1,x2) & n_back(x2) & of(x2,x1) & n_thing(x1) & n_people(x1) & card_eq_3(x1))
exists e1 x1 x2 x3.(n_building(x3) & inside(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_turn(e1) & n_back(x2) & of(x2,x1) & n_thing(x1) & n_people(x1) & card_eq_3(x1))