lies considerable skill and determination , backed by sheer nerve . 
(ROOT (S (VP (VBZ lies) (NP (NP (JJ considerable) (NN skill) (CC and) (NN determination)) (, ,) (VP (VBN backed) (PP (IN by) (NP (JJ sheer) (NN nerve)))))) (. .)))
(ROOT (S (VP (VBZ ) (NP (NP (JJ ) (NN ) (CC ) (NN )) (, ) (VP (VBN ) (PP (IN ) (NP (JJ ) (NN )))))) (. )))