A man and a woman standing on a landing between flights of stairs with a plate in the hands of the woman.
A couple standing on a landing.
A man and a woman do not have to be a couple.  Just because they are standing on a landing between flight of stairs it does not mean they are on a landing.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7 x8.(n_hand(x8) & a_topic(s1) & subset_of(x2,s1) & in(e1,x8) & of(x8,x2) & n_woman(x2) & n_woman(x2) & with(e1,x7) & n_plate(x7) & on(e1,x4) & between(x4,x5) & of(x5,x6) & n_stair(x6) & n_flight(x5) & n_landing(x4) & Actor(e1,x3) & v_stand(e1) & (x2 = x3) & subset_of(x1,s1) & n_man(x1))
exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_landing(x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_couple(x1))