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 Q]: Given Relationship: 'be chairman of', Sentence: 'President Bush named his top economic advisor , Ben Bernanke to replace economic legend Alan Greenspan as the chairman of the Federal Reserve .'
[EX A]: chairman

[EX Q]: Given Relationship: 'present to', Sentence: 'Paper presented at the First Conference on Mesoscale Meteorology , Norman , Oklahoma , May 31-June 3 , 1983 .'
[EX A]: presented

[EX Q]: Given Relationship: 'be member of', Sentence: 'He has served as a member of the Board of Caroni Ltd and as Vice President of the Trinidad and Tobago Medical Association .'
[EX A]:
member