a good documentary can make interesting a subject you thought would leave you cold . 
(ROOT (S (NP (DT a) (JJ good) (NN documentary)) (VP (MD can) (VP (VB make) (S (ADJP (JJ interesting)) (NP (NP (DT a) (NN subject)) (SBAR (S (NP (PRP you)) (VP (VBD thought) (SBAR (S (VP (MD would) (VP (VB leave) (NP (PRP you)) (S (ADJP (JJ cold)))))))))))))) (. .)))
(ROOT (S (NP (DT ) (JJ ) (NN )) (VP (MD ) (VP (VB ) (S (ADJP (JJ )) (NP (NP (DT ) (NN )) (SBAR (S (NP (PRP )) (VP (VBD ) (SBAR (S (VP (MD ) (VP (VB ) (NP (PRP )) (S (ADJP (JJ )))))))))))))) (. )))