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: 'It runs on Microsoft Windows , Apple Mac OS X , and Linux , and is available in several versions .', Argument/Subject 1: 'window', Argument/Subject 2: 'mac'
run on

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'
run on

Sentence: 'Morgan was born in 1866 in Lexington , Kentucky , nephew of the flamboyant General John Hunt Morgan who was nicknamed " The Thunderbolt of the Confederacy " for his swashbuckling exploits during the Civil War .', Argument/Subject 1: 'morgan', Argument/Subject 2: 'lexington'

be bear in