has not spawned a single good film . 
(ROOT (S (VP (VBZ has) (RB not) (VP (VBN spawned) (NP (DT a) (JJ single) (JJ good) (NN film)))) (. .)))
(ROOT (S (VP (VBZ ) (RB ) (VP (VBN ) (NP (DT ) (JJ ) (JJ ) (NN )))) (. )))