it must be said that he is an imaginative filmmaker who can see the forest for the trees . 
(ROOT (S (NP (PRP it)) (VP (MD must) (VP (VB be) (VP (VBN said) (SBAR (IN that) (S (NP (PRP he)) (VP (VBZ is) (NP (NP (DT an) (JJ imaginative) (NN filmmaker)) (SBAR (WHNP (WP who)) (S (VP (MD can) (VP (VB see) (NP (NP (DT the) (NN forest)) (PP (IN for) (NP (DT the) (NNS trees))))))))))))))) (. .)))
(ROOT (S (NP (PRP )) (VP (MD ) (VP (VB ) (VP (VBN ) (SBAR (IN ) (S (NP (PRP )) (VP (VBZ ) (NP (NP (DT ) (JJ ) (NN )) (SBAR (WHNP (WP )) (S (VP (MD ) (VP (VB ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (DT ) (NNS ))))))))))))))) (. )))