he thinks the film is just as much a document about him as it is about the subject . 
(ROOT (S (NP (PRP he)) (VP (VBZ thinks) (SBAR (S (NP (DT the) (NN film)) (VP (VBZ is) (NP (NP (ADVP (RB just) (RB as) (RB much)) (DT a) (NN document)) (PP (IN about) (NP (PRP him))) (SBAR (IN as) (S (NP (PRP it)) (VP (VBZ is) (PP (IN about) (NP (DT the) (NN subject))))))))))) (. .)))
(ROOT (S (NP (PRP )) (VP (VBZ ) (SBAR (S (NP (DT ) (NN )) (VP (VBZ ) (NP (NP (ADVP (RB ) (RB ) (RB )) (DT ) (NN )) (PP (IN ) (NP (PRP ))) (SBAR (IN ) (S (NP (PRP )) (VP (VBZ ) (PP (IN ) (NP (DT ) (NN ))))))))))) (. )))