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.

Example Input: Sentence: 'Colin Powell endorsed Obama because he 's black .', Argument/Subject 1: 'powell', Argument/Subject 2: 'obama'
Example Output: endorse

Example Input: Sentence: 'I am writing this on the day before Barak Obama is inaugurated as President of the United States of America .', Argument/Subject 1: 'obama', Argument/Subject 2: 'unite state of america'
Example Output: be president of

Example 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'
Example Output:
be leader of