TASK DEFINITION: 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.
PROBLEM: Sentence: 'The African Union is a successor to the Organization of African Unity .', Argument/Subject 1: 'african union', Argument/Subject 2: 'organization of african unity'

SOLUTION: be successor to

PROBLEM: 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'

SOLUTION: be city in

PROBLEM: Sentence: 'Merry belated Christmas and Happy New Year !', Argument/Subject 1: 'happy', Argument/Subject 2: 'christma'

SOLUTION:
belate