Given the task definition and input, reply with output. From the given sentence, extract the phrase (often noun or verb) that carries the given relationship. The generated phrase should be present in the sentence.

Given Relationship: 'attack', Sentence: 'When McCain launched a late-October attack on Obama , alleging that he would morph the IRS into a "welfare agency , " MSNBC host Rachel Maddow bore down on the line .'
attack