(S (S (NP (BASENP (NNP Lehman) (NNP Brothers)) (PRN (COMMA ,) (BASENP (DT a) (JJ major) (JJ American) (NN investment) (NN banker)) (COMMA ,))) (VP (VBZ has) (VP (VP (VBN filed) (BASENP (NN paperwork))) (PP (IN for) (BASENP (NN bankruptcy)))))) (PERIOD .))