thirteen conversations about one thing , for all its generosity and optimism , never resorts to easy feel-good sentiments 
(ROOT (S (NP (NP (CD thirteen) (NNS conversations)) (PP (IN about) (NP (CD one) (NN thing)))) (, ,) (PP (IN for) (NP (PDT all) (PRP$ its) (NN generosity) (CC and) (NN optimism))) (, ,) (ADVP (RB never)) (VP (VBZ resorts) (PP (IN to) (NP (JJ easy) (NML (S (VP (NN feel) (HYPH -) (ADVP (JJ good))))) (NNS sentiments))))))
(ROOT (S (NP (NP (CD ) (NNS )) (PP (IN ) (NP (CD ) (NN )))) (, ) (PP (IN ) (NP (PDT ) (PRP$ ) (NN ) (CC ) (NN ))) (, ) (ADVP (RB )) (VP (VBZ ) (PP (IN ) (NP (JJ ) (NML (S (VP (NN ) (HYPH ) (ADVP (JJ ))))) (NNS ))))))