has an ambition to say something about its subjects , but not a willingness . 
(ROOT (S (VP (VBZ has) (NP (NP (DT an) (NN ambition) (S (VP (TO to) (VP (VB say) (NP (NN something)) (PP (IN about) (NP (PRP$ its) (NNS subjects))))))) (, ,) (CC but) (RB not) (NP (DT a) (NN willingness)))) (. .)))
(ROOT (S (VP (VBZ ) (NP (NP (DT ) (NN ) (S (VP (TO ) (VP (VB ) (NP (NN )) (PP (IN ) (NP (PRP$ ) (NNS ))))))) (, ) (CC ) (RB ) (NP (DT ) (NN )))) (. )))