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: 'Polls show Obama leading in Oregon , where 52 delegates are up for grabs , while Clinton is ahead in Kentucky , a state with 51 delegates that has a similar demographic to West Virginia , where she won a thumping victory Tuesday .', Argument/Subject 1: 'obama', Argument/Subject 2: 'oregon'
Example Output: lead in

Example Input: Sentence: 'Each time the computer boots up you can choose whether to run Mac OS X or the installed version of Windows .', Argument/Subject 1: 'window', Argument/Subject 2: 'mac'
Example Output: run on

Example Input: Sentence: 'A Chairman of the Board , and one or more Vice Chairmen may be elected or appointed by the Board of Directors from time to time .', Argument/Subject 1: 'chairman', Argument/Subject 2: 'board'
Example Output:
be elect by