The man and women is laying on the couch smiling.
They are on a date together.
A man and woman can be laying together and not be on a date. They could be brother/sister.
exists e1 e2 x1 x2 x3 x4 x5.(n_couch(x4) & n_man(x2) & on(e1,x4) & Actor(e2,x5) & v_smile(e2) & (x4 = x5) & Actor(e1,x1) & v_lay(e1) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1))
exists p1 x1.(n_thing(x1) & exists x2.(on(x1,x2) & r_together(x2) & n_date(x2)))