it 's too harsh to work as a piece of storytelling , but as an intellectual exercise -- an unpleasant debate that 's been given the drive of a narrative and that 's been acted out -- the believer is nothing less than a provocative piece of work . 
(ROOT (S (S (NP (PRP it)) (VP (VBZ 's) (ADJP (RB too) (JJ harsh) (SBAR (S (VP (TO to) (VP (VB work) (PP (IN as) (NP (NP (DT a) (NN piece)) (PP (IN of) (NP (NN storytelling)))))))))))) (, ,) (CC but) (S (PP (IN as) (NP (NP (DT an) (JJ intellectual) (NN exercise)) (, --) (NP (NP (DT an) (JJ unpleasant) (NN debate)) (SBAR (SBAR (WHNP (WDT that)) (S (VP (VBZ 's) (VP (VBN been) (VP (VBN given) (NP (NP (DT the) (NN drive)) (PP (IN of) (NP (DT a) (NN narrative))))))))) (CC and) (SBAR (WHNP (WDT that)) (S (VP (VBZ 's) (VP (VBN been) (VP (VBN acted) (PRT (RP out))))))))) (, --))) (NP (DT the) (NN believer)) (VP (VBZ is) (NP (NP (NN nothing)) (ADJP (JJR less) (PP (IN than) (NP (NP (DT a) (JJ provocative) (NN piece)) (PP (IN of) (NP (NN work))))))))) (. .)))
(ROOT (S (S (NP (PRP )) (VP (VBZ ) (ADJP (RB ) (JJ ) (SBAR (S (VP (TO ) (VP (VB ) (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (NN )))))))))))) (, ) (CC ) (S (PP (IN ) (NP (NP (DT ) (JJ ) (NN )) (, ) (NP (NP (DT ) (JJ ) (NN )) (SBAR (SBAR (WHNP (WDT )) (S (VP (VBZ ) (VP (VBN ) (VP (VBN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (DT ) (NN ))))))))) (CC ) (SBAR (WHNP (WDT )) (S (VP (VBZ ) (VP (VBN ) (VP (VBN ) (PRT (RP ))))))))) (, ))) (NP (DT ) (NN )) (VP (VBZ ) (NP (NP (NN )) (ADJP (JJR ) (PP (IN ) (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (NN ))))))))) (. )))