A man and a woman walk through the street during a parade.
A couple walk home
A man and women walking together doesn't imply they are a couple and are walking home.
exists e1 s1 x1 x2 x3 x4 x5.(n_street(x4) & a_topic(s1) & subset_of(x2,s1) & during(e1,x5) & n_parade(x5) & through(e1,x4) & Theme(e1,x3) & v_walk(e1) & (x2 = x3) & n_woman(x2) & subset_of(x1,s1) & n_man(x1))
exists x1 x2 x3.(a_topic(x1) & n_home(x1) & of(x1,x3) & n_walk(x3) & of(x1,x2) & n_couple(x2))