Given a sentence and two mentions from the text (arguments), indicate a phrase (a verb or noun phrase) that describes the relationship between the provided arguments.

[EX Q]: Sentence: 'In addition a member of the Board of Finance and the Pastors serve as non-voting advisory members of the committee .', Argument/Subject 1: 'pastor', Argument/Subject 2: 'board'
[EX A]: be member of

[EX Q]: Sentence: 'Mesa Airlines of Arizona has launched a new inter-island air service in Hawaii called " Go! " .', Argument/Subject 1: 'airline', Argument/Subject 2: 'hawaius'
[EX A]: launch in

[EX Q]: Sentence: 'Former Federal Reserve chairman Alan Greenspan wrote in a recent Financial Times op-ed that " the current financial crisis in the United States is likely to be judged the most wrenching since the end of the Second World War . " Resident scholar Vincent Reinhart opened an AEI conference Monday noting that his recent encounter with a book about Nostradamus may be " an omen . "', Argument/Subject 1: 'greenspan', Argument/Subject 2: 'federal reserve'
[EX A]:
be chairman of