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: 'You and your right wing friends can not defend any Republican without saying a Democrat did something worse then the Republican and that is all you have to say .', Argument/Subject 1: 'republican', Argument/Subject 2: 'democrat'

SOLUTION: be say to

PROBLEM: Sentence: 'The President shall appoint a Secretary and Treasurer for the Society .', Argument/Subject 1: 'secretary', Argument/Subject 2: 'president'

SOLUTION:
be appoint by