it 's a very valuable film ... 
(ROOT (S (NP (PRP it)) (VP (VBZ 's) (NP (DT a) (ADJP (RB very) (JJ valuable)) (NN film))) (. ...)))
(ROOT (S (NP (PRP )) (VP (VBZ ) (NP (DT ) (ADJP (RB ) (JJ )) (NN ))) (. )))