's in the action scenes that things fall apart 
(ROOT (VP (VBZ 's) (PP (IN in) (NP (DT the) (NN action) (NNS scenes))) (SBAR (WHADVP (WDT that)) (S (NP (NNS things)) (VP (VBP fall) (ADVP (RB apart)))))))
(ROOT (VP (VBZ ) (PP (IN ) (NP (DT ) (NN ) (NNS ))) (SBAR (WHADVP (WDT )) (S (NP (NNS )) (VP (VBP ) (ADVP (RB )))))))