(S (S (BASENP (NNS Commentators)) (VP (VBP have) (VP (VBN noted) (SBAR (IN that) (S (BASENP (NNP Obama)) (VP (VBZ seems) (S (VP (TO to) (VP (VP (VB perform) (ADVP (RB well))) (PP (IN in) (BASENP (NN caucus) (NNS states)))))))))))) (PERIOD .))