Q: 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: 'During the time when the Chairman of the Riigikogu is performing the duties of the President of the Republic , his powers as a member of the Riigikogu shall be suspended .', Argument/Subject 1: 'chairman', Argument/Subject 2: 'president'
A:
perform duty of