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: 'surrender in', Sentence: 'On August 17 , 1945 , Emperor Hirohito announced Japan surrender , which became official on September 2 on US Naval ship the USS Missouri .'
[A]: surrender


[Q]: Given Relationship: 'be commander of', Sentence: 'The President is the Commander of the Armed Forces , declares war in case it is resolved upon by Government and is also the Chairman of the Superior Council of the Judiciary .'
[A]:
Commander