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: 'Warner , an influential Republican and former chairman of the Senate Armed Services Committee , on Thursday recommended that Bush announce the beginning of a U.S. withdrawal in mid-September and that those troops should be back in the United States by Christmas .'
chairman

Given Relationship: 'be governor of', Sentence: 'George W. Bush was only the governor of Texas before being elected to the Presidency .'
governor

Given Relationship: 'be bear in', Sentence: 'Darin was born Walden Robert Cassotto in New York 's Harlem and grew up in the Bronx .'

Darin