the cumulative effect of watching this 65-minute trifle 
(ROOT (NP (NP (DT the) (JJ cumulative) (NN effect)) (PP (IN of) (S (VP (VBG watching) (NP (DT this) (NML (CD 65) (HYPH -) (NN minute)) (NN trifle)))))))
(ROOT (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (S (VP (VBG ) (NP (DT ) (NML (CD ) (HYPH ) (NN )) (NN )))))))