A little girl with a backpack sitting down looking at a book.
the dog eats rats
The first sentence refers to a little girl and the second a dog.
exists e1 e2 s1 s2 x1 x2 x3 x4.(a_topic(x1) & with(x1,x2) & for(e1,e2) & at(e2,x4) & n_book(x4) & Actor(e2,x3) & v_look(e2) & a_down(s2) & Manner(e1,s2) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_backpack(x2) & n_girl(x1) & a_little(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_dog(x1) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_rat(x2))