Two children wearing denim walk on a runway.
Two children walk down the runway.
''walk on a runway'' is  a rephrasing of '' walk down the runway. ''
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & on(x3,x5) & n_runway(x5) & n_walk(x3) & of(x3,x4) & n_denim(x4) & (x1 = x2) & n_child(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_runway(x2) & down(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_child(x1) & card_eq_2(x1))