depressed about anything before watching this film 
(ROOT (S (ADJP (JJ depressed) (PP (IN about) (NP (NN anything)))) (PP (IN before) (S (VP (VBG watching) (NP (DT this) (NN film)))))))
(ROOT (S (ADJP (JJ ) (PP (IN ) (NP (NN )))) (PP (IN ) (S (VP (VBG ) (NP (DT ) (NN )))))))