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.

Example Input: Sentence: 'The YVR board has one nominee from each of the Vancouver Board of Trade , the Institute of Chartered Accountants of British Columbia , the Law Society of B.C. , the Association of Professional Engineers and Geoscientists of B.C. , Richmond city , Vancouver city and Metro Vancouver and two from the Canadian government .', Argument/Subject 1: 'vancouver', Argument/Subject 2: 'british columbium'
Example Output: be city in

Example Input: Sentence: 'Greensboro is served by the Piedmont Triad International Airport .', Argument/Subject 1: 'greensboro', Argument/Subject 2: 'piedmont triad international airport'
Example Output: be serve by

Example Input: Sentence: 'U.S. President Ronald Reagan appoints his campaign chair William Casey as Director of the CIA .', Argument/Subject 1: 'director', Argument/Subject 2: 'president'
Example Output:
be appoint by