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: 'The African Union is a successor to the Organization of African Unity .', Argument/Subject 1: 'african union', Argument/Subject 2: 'organization of african unity'

Ex Output:
be successor to

Ex Input:
Sentence: 'Bikram yoga is one of the forms of yoga that is radically different from other forms of yoga .', Argument/Subject 1: 'bikram yoga', Argument/Subject 2: 'yoga'

Ex Output:
be form 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