a good race , one that will have you at the edge of your seat for long stretches 
(ROOT (NP (NP (DT a) (JJ good) (NN race)) (, ,) (NP (NP (CD one)) (SBAR (WHNP (WDT that)) (S (VP (MD will) (VP (VB have) (NP (PRP you)) (PP (IN at) (NP (NP (DT the) (NN edge)) (PP (IN of) (NP (PRP$ your) (NN seat))))) (PP (IN for) (NP (JJ long) (NNS stretches))))))))))
(ROOT (NP (NP (DT ) (JJ ) (NN )) (, ) (NP (NP (CD )) (SBAR (WHNP (WDT )) (S (VP (MD ) (VP (VB ) (NP (PRP )) (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (PRP$ ) (NN ))))) (PP (IN ) (NP (JJ ) (NNS ))))))))))