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 run against', Sentence: 'But I bet McCain will make the run against Clinton , or less likely Obama , and he will win .'

Ex Output:
against


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: 'join', Sentence: 'Football star David Beckham will remain in Italy after joining AC Milan while his wife Victoria will stay back in Los Angeles with their three ...'

Ex Output:

joining