is playful but highly studied and dependent for its success on a patient viewer 
(ROOT (VP (VBZ is) (ADJP (ADJP (JJ playful)) (CC but) (ADJP (RB highly) (VBN studied)) (CC and) (ADJP (JJ dependent) (PP (IN for) (NP (NP (PRP$ its) (NN success)) (PP (IN on) (NP (DT a) (NN patient) (NN viewer)))))))))
(ROOT (VP (VBZ ) (ADJP (ADJP (JJ )) (CC ) (ADJP (RB ) (VBN )) (CC ) (ADJP (JJ ) (PP (IN ) (NP (NP (PRP$ ) (NN )) (PP (IN ) (NP (DT ) (NN ) (NN )))))))))