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.

[Q]: Given Relationship: 'speak at', Sentence: 'He would probably rather forget the principles I heard him defend in a closed forum last year arguing against inviting Ahmadinejad to speak at Columbia after a previous attempt to have him speak at the institution without Bollinger 's knowledge fell through .'
[A]: speak

[Q]: Given Relationship: 'be senator from', Sentence: 'Wall Street Journal says yesterday vote Voice of America US Senate Votes to Renew Wiretap Law Voice of America Feb wiretap bill prompted return to chamber of two presidential candidates Democratic Senator Barack Obama of Illinois and Republican Senator FISA Is Ratings Poison Yahoo!'
[A]: Senator

[Q]: Given Relationship: 'be elect president of', Sentence: 'After two years of campaigning , Barack Hussein Obama was elected 44th president of The United States of America on the promise of change and a belief in hope .'
[A]:
president