TASK DEFINITION: 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.
PROBLEM: Sentence: 'Diwali is one of the most celebrated holidays in India .', Argument/Subject 1: 'diwalus', Argument/Subject 2: 'indium'

SOLUTION: be holiday in

PROBLEM: 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'

SOLUTION: be guitarist for

PROBLEM: Sentence: 'The ex-officio Archivist shall be appointed by the Board of Directors upon the recommendation of the President for an indeterminate term to maintain the historical records of the Association and the Board of Directors .', Argument/Subject 1: 'board', Argument/Subject 2: 'president'

SOLUTION:
appoint