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: 'be chairman of', Sentence: 'Alan Greenspan , the Chairman of the U.S. Federal Reserve , the current U.S. administration , and U.S. politicians of all stripes could teach a few lessons to those who dictated the level of inflation ahead of them .'
Chairman

Given Relationship: 'recommend to', Sentence: 'The Nominating Committee of the Alumni Board , representing the Alfred State Alumni Association , will recommend to the vice president of Institutional Advancement each year 's recipient .'
recommend

Given Relationship: 'be leader of', Sentence: 'Robinson also stirred controversy last year when he met with PLO leader Yasser Arafat in a bid to gain the release of Canadian hostages held by the Iraqi government .'

leader