Two employees are taking a break on the stairs.
Two people are having a smoke break at work.
Not all employees smoke.
exists e1 x1 x2 x3.(n_stair(x3) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & on(x2,x3) & n_break(x2) & n_employee(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & at(x2,x4) & n_work(x4) & n_break(x2) & of(x2,x3) & n_smoke(x3) & n_people(x1) & card_eq_2(x1))