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: 'win', Sentence: 'The Boston Red Sox Sports Odds of winning the 2009 World Series are currently fourth best in baseball , at +800 .'

Ex Output:
in


Ex Input:
Given Relationship: 'be president of', Sentence: 'Tomorrow Barack Obama will become president of the United States .'

Ex Output:
president


Ex Input:
Given Relationship: 'be successor of', Sentence: 'Pope Saint Sergius I is elected 84th successor of Peter , ruling for 14 years .'

Ex Output:

successor