(S (S (CC But) (S (BASENP (DT this)) (VP (VP (VBZ is) (RB not)) (NP (BASENP (DT the) (JJ first) (NN time)) (SBAR (S (NP (BASENP (DT the) (NN self-esteem) (NN generation) (POS 's)) (NNS proponents)) (VP (VBP have) (VP (VBN been) (VP (VBN criticized)))))))))) (PERIOD .))