Four people sit on the steps of the entrance to a building.
Some people are smoking cigarettes outside.
People sitting on steps are not necessarily smoking cigarettes.
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 s1 x1 x2.(a_outside(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_smoke(e1) & n_cigarette(x2) & n_people(x1))