A young girl laying on a couch reading a book.
The person is reading.
A young girl is also a person which is part of her description of reading a book.
exists e1 e2 s1 x1 x2 x3 x4 x5.(a_topic(x1) & on(e1,x3) & Theme(e2,x5) & Actor(e2,x4) & v_read(e2) & n_book(x5) & (x3 = x4) & n_couch(x3) & Actor(e1,x2) & v_lay(e1) & (x1 = x2) & n_girl(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_person(x1) & Theme(e1,x2) & Actor(e1,x1) & v_read(e1) & n_thing(x2))