the film is not only a love song to the movies but 
(ROOT (S (NP (DT the) (NN film)) (VP (VBZ is) (CONJP (RB not) (RB only)) (NP (NP (DT a) (NN love) (NN song)) (PP (IN to) (NP (DT the) (NNS movies))))) (CC but)))
(ROOT (S (NP (DT ) (NN )) (VP (VBZ ) (CONJP (RB ) (RB )) (NP (NP (DT ) (NN ) (NN )) (PP (IN ) (NP (DT ) (NNS ))))) (CC )))