becomes an exercise in trying to predict when a preordained `` big moment '' will occur and not `` if . '' 
(ROOT (S (VP (VBZ becomes) (NP (NP (DT an) (NN exercise)) (PP (PP (IN in) (S (VP (VBG trying) (S (VP (TO to) (VP (VB predict) (SBAR (WHADVP (WRB when)) (S (NP (DT a) (VBN preordained) (`` ``) (JJ big) (NN moment) ('' '')) (VP (MD will) (VP (VB occur))))))))))) (CC and) (RB not) (`` ``) (IN if)))) (. .) ('' '')))
(ROOT (S (VP (VBZ ) (NP (NP (DT ) (NN )) (PP (PP (IN ) (S (VP (VBG ) (S (VP (TO ) (VP (VB ) (SBAR (WHADVP (WRB )) (S (NP (DT ) (VBN ) (`` ) (JJ ) (NN ) ('' )) (VP (MD ) (VP (VB ))))))))))) (CC ) (RB ) (`` ) (IN )))) (. ) ('' )))