Two people are descending down some stone steps.
A couple of people are walking down the stairs outside.
People descending down some steps may not necessarily be walking down the steps. Stone steps aren't always found outside.
exists e1 s1 x1 x2 x3.(a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_descend(e1) & n_step(x2) & of(x2,x3) & n_stone(x3) & n_people(x1) & card_eq_2(x1))
exists e1 s1 x1 x2 x3.(n_stair(x3) & a_outside(s1) & Manner(e1,s1) & down(e1,x3) & Actor(e1,x1) & v_walk(e1) & of(x1,x2) & n_people(x2) & n_couple(x1))