A couple walking on a dirt road.
A man and woman are walking on a dirt road.
Just because a couple walking on a dirt road does not imply that man and woman are walking on a dirt road
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x3) & n_road(x3) & of(x3,x4) & n_dirt(x4) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_couple(x1))
exists e1 x1 x2 x3 x4 x5.(on(e1,x4) & n_road(x4) & of(x4,x5) & n_dirt(x5) & Actor(e1,x1) & v_walk(e1) & n_woman(x3) & n_man(x2) & subset_of(x3,x1) & subset_of(x2,x1))