there are many definitions of ` time waster ' but this movie must surely be one of them . 
(ROOT (S (S (NP (EX there)) (VP (VBP are) (NP (NP (JJ many) (NNS definitions)) (PP (IN of) (`` `) (NP (NN time) (NN waster)) ('' '))))) (CC but) (S (NP (DT this) (NN movie)) (VP (MD must) (ADVP (RB surely)) (VP (VB be) (NP (NP (CD one)) (PP (IN of) (NP (PRP them))))))) (. .)))
(ROOT (S (S (NP (EX )) (VP (VBP ) (NP (NP (JJ ) (NNS )) (PP (IN ) (`` ) (NP (NN ) (NN )) ('' ))))) (CC ) (S (NP (DT ) (NN )) (VP (MD ) (ADVP (RB )) (VP (VB ) (NP (NP (CD )) (PP (IN ) (NP (PRP ))))))) (. )))