A man and a woman are standing on the curb.
A couple of people on the curb.
The man and woman are a couple.
exists e1 x1 x2 x3 x4.(n_curb(x4) & on(e1,x4) & Actor(e1,x1) & v_stand(e1) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_man(x2))
exists x1 x2 x3.(n_curb(x3) & a_topic(x1) & on(x1,x3) & of(x1,x2) & n_people(x2) & n_couple(x1))