, a ripping good yarn is told . 
(ROOT (S (, ,) (NP (DT a) (VBG ripping) (JJ good) (NN yarn)) (VP (VBZ is) (VP (VBN told))) (. .)))
(ROOT (S (, ) (NP (DT ) (VBG ) (JJ ) (NN )) (VP (VBZ ) (VP (VBN ))) (. )))