the plot has a number of holes , and 
(ROOT (S (NP (DT the) (NN plot)) (VP (VP (VBZ has) (NP (NP (DT a) (NN number)) (PP (IN of) (NP (NNS holes))))) (, ,) (CC and))))
(ROOT (S (NP (DT ) (NN )) (VP (VP (VBZ ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (NNS ))))) (, ) (CC ))))