( sam 's ) self-flagellation is more depressing than entertaining . 
(ROOT (S (NP (-LRB- -LRB-) (NP (NNP sam) (POS 's)) (-RRB- -RRB-) (NN self) (HYPH -) (NN flagellation)) (VP (VBZ is) (ADJP (ADJP (RBR more) (JJ depressing)) (PP (IN than) (ADJP (JJ entertaining))))) (. .)))
(ROOT (S (NP (-LRB- ) (NP (NNP ) (POS )) (-RRB- ) (NN ) (HYPH ) (NN )) (VP (VBZ ) (ADJP (ADJP (RBR ) (JJ )) (PP (IN ) (ADJP (JJ ))))) (. )))