A man and a woman have a chat while observing a museum exhibit
A couple is watching a movie together on the couch.
If a man and a woman are observing a museum exhibit, they are not watching a movie.
exists e1 e2 x1 x2 x3 x4 x5 x6.(while(e1,e2) & Theme(e2,x5) & Actor(e2,x1) & v_observe(e2) & n_exhibit(x5) & of(x5,x6) & n_museum(x6) & Theme(e1,x4) & Actor(e1,x1) & v_have(e1) & n_chat(x4) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_man(x2))
exists e1 s1 x1 x2 x3.(n_couch(x3) & on(e1,x3) & a_together(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_movie(x2) & n_couple(x1))