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.

Sentence: 'The timetable requires that the Chair of the Academic Board clarify the roles and responsibilities of all positions associated with the Academic Board , including the Chair , Deputy Chair , committee chairs , Academic Board members , committee members and executive officers .', Argument/Subject 1: 'chair', Argument/Subject 2: 'board'
be member of