Four people sit on the steps of the entrance to a building.
Four people are sitting in a cafe.
A BUILDING ENTRANCE IS NOT A CAFE
exists e1 x1 x2 x3 x4.(n_entrance(x3) & n_step(x2) & on(e1,x2) & to(x2,x4) & n_building(x4) & of(x2,x3) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_4(x1))
exists e1 x1 x2.(in(e1,x2) & n_cafe(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_4(x1))