(S (S (BASENP (DT The) (NN accusation)) (VP (VBZ centers) (PP (IN around) (NP (NP (BASENP (DT a) (NN report)) (PP (IN in) (BASENP (NNP The) (NNP New) (NNP York) (NNP Times)))) (VP (VP (VBG associating) (BASENP (NNP Obama))) (PP (IN with) (NP (BASENP (NNP William) (NNP C.) (NNP Ayers)) (COMMA ,) (NP (BASENP (DT a) (NNP Chicago) (NN professor)) (SBAR (WHNP (WP who)) (S (VP (VP (VBD was) (NP (BASENP (DT a) (NN member)) (PP (IN of) (BASENP (DT the) (JJ radical) (NNPS Weathermen) (NN group))))) (PP (IN during) (BASENP (DT the) (NNS 1960s)))))))))))))) (PERIOD .))