its engaging simplicity is driven by appealing leads . 
(ROOT (S (NP (PRP$ its) (VBG engaging) (NN simplicity)) (VP (VBZ is) (VP (VBN driven) (PP (IN by) (NP (JJ appealing) (NNS leads))))) (. .)))
(ROOT (S (NP (PRP$ ) (VBG ) (NN )) (VP (VBZ ) (VP (VBN ) (PP (IN ) (NP (JJ ) (NNS ))))) (. )))