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: 'Jerusalem plays a different role in Islam .', Argument/Subject 1: 'jerusalem', Argument/Subject 2: 'islam'
Example Output: play role in

Example Input: Sentence: 'I was editor of Surfer magazine , and Richard Nixon was president of the United States .', Argument/Subject 1: 'nixon', Argument/Subject 2: 'unite state'
Example Output: be president of

Example Input: Sentence: 'MSF Photo Blog is powered by WordPress MU.', Argument/Subject 1: 'blog', Argument/Subject 2: 'wordpress'
Example Output:
be power by