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: 'The United States of America just inaugurated its 44th president , Barack Obama .'

Ex Output:
president


Ex Input:
Given Relationship: 'be mayor of', Sentence: 'Former New York City mayor Rudy Giuliani joined in the mockery .'

Ex Output:
mayor


Ex Input:
Given Relationship: 'live in', Sentence: 'As a foreign-born American who once lived for a time in Canada , I do n't see a problem at all .'

Ex Output:

lived