pushed to their most virtuous limits , lending the narrative an unusually surreal tone 
(ROOT (S (VP (VBD pushed) (PP (IN to) (NP (PRP$ their) (ADJP (RBS most) (JJ virtuous)) (NNS limits))) (, ,) (S (VP (VBG lending) (NP (DT the) (NN narrative)) (NP (DT an) (ADJP (RB unusually) (JJ surreal)) (NN tone)))))))
(ROOT (S (VP (VBD ) (PP (IN ) (NP (PRP$ ) (ADJP (RBS ) (JJ )) (NNS ))) (, ) (S (VP (VBG ) (NP (DT ) (NN )) (NP (DT ) (ADJP (RB ) (JJ )) (NN )))))))