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.

Example Input: Given Relationship: 'be run against', Sentence: 'But I bet McCain will make the run against Clinton , or less likely Obama , and he will win .'
Example Output: against

Example Input: Given Relationship: 'be member of', Sentence: 'Rice assured the Japanese ambassador that Washington would do so and also indicated that the United States will support Japan 's bid to become a permanent member of the U.N. Security Council , according to the sources .'
Example Output: member

Example Input: Given Relationship: 'be head of', Sentence: 'Geithner was head of the New York Federal Reserve Bank and has previous extensive experience in the Treasury Department .'
Example Output:
head