A person is sitting on the ground reading a book.
Lacey was reading a book.
A person might have many names besides Lacey.
exists e1 e2 x1 x2 x3 x4.(n_ground(x2) & on(e1,x2) & Theme(e2,x4) & Actor(e2,x3) & v_read(e2) & n_book(x4) & (x2 = x3) & Actor(e1,x1) & v_sit(e1) & n_person(x1))
exists e1 x1 x2.(ne_per_lacey(x1) & Theme(e1,x2) & Actor(e1,x1) & v_read(e1) & n_book(x2))