does justice both to stevenson and to the sci-fi genre 
(ROOT (S (VP (VBZ does) (NP (NN justice)) (PP (CC both) (PP (IN to) (NP (NNP stevenson))) (CC and) (PP (IN to) (NP (DT the) (NML (NN sci) (HYPH -) (NN fi)) (NN genre)))))))
(ROOT (S (VP (VBZ ) (NP (NN )) (PP (CC ) (PP (IN ) (NP (NNP ))) (CC ) (PP (IN ) (NP (DT ) (NML (NN ) (HYPH ) (NN )) (NN )))))))