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 Q]: 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 A]: be successor to

[EX Q]: Sentence: 'RICHIE SAMBORA INTERACTIVE GUITAR Former Bon Jovi guitarist Richie Sambora hosts this interactive tutorial .', Argument/Subject 1: 'richie sambora', Argument/Subject 2: 'bon jovus'
[EX A]: be guitarist for

[EX Q]: Sentence: 'Spain is a country in southwestern Europe , bordering the Bay of Biscay , the Mediterranean Sea , the North Atlantic Ocean , and the Pyrenees Mountains , southwest of France .', Argument/Subject 1: 'spain', Argument/Subject 2: 'europe'
[EX A]:
be country in