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.
Input: Sentence: 'The Mayor is the ceremonial leader of the City , the presiding officer at Commission meetings and is a voting member of the Commission , with his/her vote having no more or less weight than that of any other member of the Commission .', Argument/Subject 1: 'mayor', Argument/Subject 2: 'city'
Output:
be leader of