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: '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: 'The city of Tokyo is the capital of Japan and the tourists visit it round the year .', Argument/Subject 1: 'tokyo', Argument/Subject 2: 'japan'
Example Output: be capital city of

Example Input: Sentence: 'The American labor leaders who came to Europe , Jay Lovestone and ... ...were giants .', Argument/Subject 1: 'american', Argument/Subject 2: 'europe'
Example Output:
come to