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 Chairman of the Council shall preside at all meetings of the Council , except that , if the Chairman is unable to preside , owing to absence or inability to act , the members present shall elect one of their number to preside at that meeting and no business may be transacted at any meeting until a member has been elected to preside over that meeting .', Argument/Subject 1: 'council', Argument/Subject 2: 'chairman'
be preside over by