to keep from laughing at the ridiculous dialog or the oh-so convenient plot twists 
(ROOT (S (VP (TO to) (VP (VB keep) (PP (IN from) (S (VP (VBG laughing) (PP (IN at) (NP (NP (DT the) (JJ ridiculous) (NN dialog)) (CC or) (NP (DT the) (ADJP (UH oh) (HYPH -) (RB so) (JJ convenient)) (NN plot) (NNS twists)))))))))))
(ROOT (S (VP (TO ) (VP (VB ) (PP (IN ) (S (VP (VBG ) (PP (IN ) (NP (NP (DT ) (JJ ) (NN )) (CC ) (NP (DT ) (ADJP (UH ) (HYPH ) (RB ) (JJ )) (NN ) (NNS )))))))))))