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: 'This is important because Windows Vista , the upcoming version of the Microsoft Windows operating system , will require DRM for playback of HD content .', Argument/Subject 1: 'vista', Argument/Subject 2: 'microsoft window'

Ex Output:
be version of


Ex Input:
Sentence: 'The Berkshire MPO consists of the Chair of the BRPC , the Chair of the BRTA Advisory Board , the Commissioner of MassHighway , and the Secretary of the EOTC .', Argument/Subject 1: 'board', Argument/Subject 2: 'chair'

Ex Output:
consist of


Ex Input:
Sentence: 'Western Canada , commonly referred to as the West , is a region of Canada normally including all parts of Canada west of the province of Ontario .', Argument/Subject 1: 'western canada', Argument/Subject 2: 'canada'

Ex Output:

be region of