Two old people walk down a set of stairs, holding hands.
The two old people have been together for a very long time.
Just because holding hands does not necessarily mean they have been together for a very long time.
exists e1 e2 s1 s2 x1 x2 x3 x4.(for(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_hold(e2) & n_hand(x4) & a_down(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & of(x2,x3) & n_stair(x3) & n_set(x2) & n_people(x1) & a_old(s1) & Theme(s1,x1) & card_eq_2(x1))
exists s1 s2 s3 x1 x2.(n_people(x1) & a_old(s1) & Theme(s1,x1) & card_eq_2(x1) & for(s2,x2) & n_time(x2) & a_long(s3) & Theme(s3,x2) & r_very(x2) & Theme(s2,x1) & a_together(s2))