(S (S (NP (BASENP (NNP US) (NNP Attorney) (NNP General) (NNP Alberto) (NNP Gonzales)) (PRN (COMMA ,) (PP (IN after) (NP (BASENP (JJ several) (NNS months)) (PP (IN of) (BASENP (NN controversy))))) (COMMA ,))) (VP (BASENP (NN today)) (VP (VP (VBD announced) (BASENP (PRPD his) (NN resignation))) (PP (IN after) (NP (BASENP (NN 13) (NNS years)) (PP (IN of) (BASENP (JJ public) (NN service)))))))) (PERIOD .))