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: 'The Chairman of the US Federal Reserve Bank , Ben Bernanke , rings the forex market bell at a speech he made yesterday at an economic conference in Barcelona Spain .', Argument/Subject 1: 'bernanke', Argument/Subject 2: 'federal reserve'
Example Output: be chairman of

Example Input: Sentence: 'Why does China demand apology from only Japan ?', Argument/Subject 1: 'japan', Argument/Subject 2: 'china'
Example Output: demand apology from

Example Input: Sentence: 'Apple has released stabilising updates for its new MacBook , shown here , as well as other systems introduced in October .', Argument/Subject 1: 'apple', Argument/Subject 2: 'macbook'
Example Output:
update