(S (S (NP (BASENP (DT The) (JJS latest) (NN advertisement)) (PP (IN for) (BASENP (NNP United) (NNPS States) (NNP Republican) (JJ presidential) (NN candidate) (NNP John) (NNP McCain)))) (VP (VBZ is) (VP (VBG questioning) (NP (NP (BASENP (NNP Democrat) (NNP Barack) (NNP Obama) (POS 's)) (NN benefit)) (PP (TO to) (BASENP (NNS families))))))) (PERIOD .))