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 Input:
Sentence: 'This is now very often the predicament of those who convert to Islam when they marry a Muslim .', Argument/Subject 1: 'muslim', Argument/Subject 2: 'islam'

Ex Output:
convert to


Ex Input:
Sentence: 'President elect Barack Obama has promised to create a new American Opportunity Tax Credit worth $ 4,000 in exchange for 100 hours of community service , according to the Obama-Biden Web site .', Argument/Subject 1: 'president', Argument/Subject 2: 'obama'

Ex Output:
elect


Ex Input:
Sentence: 'Alan Greenspan , the former chairman of the Federal Reserve , told CNBC in a documentary to be shown Thursday night that he did not fully understand the scope of the subprime mortgage market until well into 2005 and could not make sense of the complex derivative products created out of mortgages .', Argument/Subject 1: 'alan greenspan', Argument/Subject 2: 'federal reserve'

Ex Output:

be chairman of