be forewarned , if you 're depressed about anything before watching this film 
(ROOT (S (VP (VB be) (ADJP (VBN forewarned)) (, ,) (SBAR (IN if) (S (NP (PRP you)) (VP (VBP 're) (ADJP (JJ depressed) (PP (IN about) (NP (NN anything)))) (PP (IN before) (S (VP (VBG watching) (NP (DT this) (NN film)))))))))))
(ROOT (S (VP (VB ) (ADJP (VBN )) (, ) (SBAR (IN ) (S (NP (PRP )) (VP (VBP ) (ADJP (JJ ) (PP (IN ) (NP (NN )))) (PP (IN ) (S (VP (VBG ) (NP (DT ) (NN )))))))))))