Two employees are taking a break on the stairs.
Two people are on stairs.
employees are taking a break on the stairs. which simply means people are on stairs.
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 p1 x1.(exists x2.(on(x1,x2) & n_stair(x2)) & n_people(x1) & card_eq_2(x1))