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: 'Pakistan 's president Gen . Pervez Musharraf threatened yesterday to kill militant followers of an Islamic cleric who said he and his comrades prefer death to surrender .'
answer:
president


question:
Given Relationship: 'be president of', Sentence: 'Ted Haggard resigned Thursday afternoon as president of the National Association of Evangelicals , amid allegations that surfaced Wednesday about involvement with a male prostitute .'
answer:
president


question:
Given Relationship: 'become', Sentence: 'Senator Obama , the son of a Kenyan father and white mother from Kansas , would become the first African American president , after a stunning rise to the pinnacle of US politics -- he was not even a US senator four years ago .'
answer:

become