be forewarned , if you 're depressed about anything before watching this film , you may just end up trying to drown yourself in a lake afterwards . 
(ROOT (S (S (VP (VB be) (VP (VBN forewarned)))) (, ,) (S (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)))))))) (, ,) (NP (PRP you)) (VP (MD may) (ADVP (RB just)) (VP (VB end) (PRT (RP up)) (S (VP (VBG trying) (S (VP (TO to) (VP (VB drown) (NP (PRP yourself)) (PP (IN in) (NP (DT a) (NN lake))) (ADVP (RB afterwards)))))))))) (. .)))
(ROOT (S (S (VP (VB ) (VP (VBN )))) (, ) (S (SBAR (IN ) (S (NP (PRP )) (VP (VBP ) (ADJP (JJ ) (PP (IN ) (NP (NN )))) (PP (IN ) (S (VP (VBG ) (NP (DT ) (NN )))))))) (, ) (NP (PRP )) (VP (MD ) (ADVP (RB )) (VP (VB ) (PRT (RP )) (S (VP (VBG ) (S (VP (TO ) (VP (VB ) (NP (PRP )) (PP (IN ) (NP (DT ) (NN ))) (ADVP (RB )))))))))) (. )))