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 president of', Sentence: 'Remember just a few short years ago ? Bill Clinton was President of the United States , Tony Blair was a popular figure , the Patriots still sucked , and virtually every male you knew would watch professional wrestling on a Monday Night .'

Ex Output:
President


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: 'be fill by', Sentence: 'A Vacancy in the office of President shall be filled by the Vice .'

Ex Output:

filled