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.

Example Input: Sentence: 'Later in the day , Rep. Barney Frank , the chairman of the House Financial Services Committee , raised the point again .', Argument/Subject 1: 'frank', Argument/Subject 2: 'financial service committee'
Example Output: be chairman of

Example Input: Sentence: 'Apart from connecting Gangtok the capital of Sikkim to Bagdogra with regular flights to Delhi and Calcutta , the Helicopter Service has become a boon to the tourism industry in Sikkim .', Argument/Subject 1: 'gangtok', Argument/Subject 2: 'sikkim'
Example Output: be capital of

Example Input: Sentence: 'Barack Obama is the 44th President of the United States of America 2008 ! ! !', Argument/Subject 1: 'barack obama', Argument/Subject 2: 'unite state'
Example Output:
be president of