One of Mr. Obama 's potential rivals , Senator John Kerry of Massachusetts , hinted at this potential problem when asked on '' This Week '' on ABC if he was prepared to run against Mr. Obama . ''
John Kerry /people/person/place_lived Massachusetts
CD IN NNP NNP POS JJ NNS , NNP NNP NNP IN NNP , VBD IN DT JJ NN WRB VBN IN '' DT NN '' IN NNP IN PRP VBD VBN TO VB IN NNP NNP . ''