instruction:
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.
question:
Given Relationship: 'be president of', Sentence: 'When Barack Obama became the 44th president of United States , there was a sense of ecstasy , joy and relief in virtually every country of the world , except in Pakistan , Iraq and Afghanistan .'
answer:
president


question:
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 ...'
answer:
joining


question:
Given Relationship: 'convert to', Sentence: 'This is a Christian missionary group that seeks to convert the Jews to Christianity .'
answer:

convert