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.

Ex Input:
Given Relationship: 'be chairman of', Sentence: 'President Bush named his top economic advisor , Ben Bernanke to replace economic legend Alan Greenspan as the chairman of the Federal Reserve .'

Ex Output:
chairman


Ex Input:
Given Relationship: 'begin at', Sentence: 'Early 1861 : Some speculate that the Civil War could have begun in Florida instead of Fort Sumter , South Carolina .'

Ex Output:
begun


Ex Input:
Given Relationship: 'be president of', Sentence: 'Sirened is projecting Bill Clinton as the next president of the United States based on delegates , polls , dirty campaign tactics , a lack of enthusiasm on the republican aisle and the fact that he will surely grab the helm from his figurehead wife that will be elected .'

Ex Output:

president