effort to see an artist , still committed to growth in his ninth decade , change while remaining true to his principles 
(ROOT (NP (NN effort) (S (VP (TO to) (VP (VB see) (S (NP (NP (DT an) (NN artist)) (, ,) (VP (ADVP (RB still)) (VBN committed) (PP (IN to) (NP (NN growth))) (PP (IN in) (NP (PRP$ his) (JJ ninth) (NN decade)))) (, ,)) (VP (VB change) (SBAR (IN while) (S (VP (VBG remaining) (ADJP (JJ true) (PP (IN to) (NP (PRP$ his) (NNS principles))))))))))))))
(ROOT (NP (NN ) (S (VP (TO ) (VP (VB ) (S (NP (NP (DT ) (NN )) (, ) (VP (ADVP (RB )) (VBN ) (PP (IN ) (NP (NN ))) (PP (IN ) (NP (PRP$ ) (JJ ) (NN )))) (, )) (VP (VB ) (SBAR (IN ) (S (VP (VBG ) (ADJP (JJ ) (PP (IN ) (NP (PRP$ ) (NNS ))))))))))))))