A person reads to a group of boys.
Someone is reading a Dr. Seuss book.
Not all books are by Dr. Seuss.
exists e1 x1 x2 x3.(to(e1,x2) & of(x2,x3) & n_boy(x3) & n_group(x2) & Actor(e1,x1) & v_read(e1) & n_person(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_read(e1) & n_book(x2) & (x2 = x4) & ne_org_seuss(x4) & (x2 = x3) & ne_org_dr.(x3) & n_person(x1))