is a verbal duel between two gifted performers . 
(ROOT (S (VP (VBZ is) (NP (NP (DT a) (JJ verbal) (NN duel)) (PP (IN between) (NP (CD two) (VBN gifted) (NNS performers))))) (. .)))
(ROOT (S (VP (VBZ ) (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (CD ) (VBN ) (NNS ))))) (. )))