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