A woman sunbathes on a rooftop while reading a book.
It is raining on the woman's book.
If one sunbathes, it is implied that it is not raining outside.
exists e1 e2 x1 x2 x3.(while(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_read(e2) & n_book(x3) & on(e1,x2) & n_rooftop(x2) & Actor(e1,x1) & v_sunbathe(e1) & n_woman(x1))
exists e1 x1 x2 x3.(n_book(x3) & of(x3,x2) & n_woman(x2) & n_thing(x1) & on(e1,x3) & Actor(e1,x1) & v_rain(e1))