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.

Ex Input:
Sentence: 'Johns Hopkins alumnus and New York City mayor Michael Bloomberg described this exactly when he wrote : " Once make a fortune , the real question is , what 's it for ?', Argument/Subject 1: 'michael bloomberg', Argument/Subject 2: 'new york'

Ex Output:
be mayor of

Ex Input:
Sentence: 'The spies find out that Saul has indeed come to kill David .', Argument/Subject 1: 'david', Argument/Subject 2: 'saul'

Ex Output:
kill

Ex Input:
Sentence: 'This site is owned and operated by NetLibrary , a division of OCLC Online Computer Library Center , Inc. , an Ohio nonprofit corporation .', Argument/Subject 1: 'netlibrary', Argument/Subject 2: 'online computer library center'

Ex Output:
be division of