(S (S (NP (NP (BASENP (DT The) (NN mayor)) (PP (IN of) (NP (BASENP (NNP San) (NNP Francisco)) (COMMA ,) (BASENP (NNP California))))) (PRN (COMMA ,) (BASENP (NNP Gavin) (NNP Newsom)) (COMMA ,))) (VP (VBZ has) (VP (VP (VBN announced) (PP (IN via) (BASENP (NNP Twitter)))) (SBAR (IN that) (S (BASENP (PRP he)) (VP (MD will) (VP (VB be) (VP (VP (VBG running) (PP (IN for) (NP (BASENP (DT the) (NN state) (POS 's)) (NN governor)))) (PP (IN in) (BASENP (DT the) (NN 2010) (NNS elections))))))))))) (PERIOD .))