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: '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'

SOLUTION: be chairman of

PROBLEM: Sentence: 'We left Varanasi thinking we would have a somewhat hard 2 days of train and bus travel to Pokhara , Nepal where we would start the Anapurna trek .', Argument/Subject 1: 'trek', Argument/Subject 2: 'pokhara'

SOLUTION: start from

PROBLEM: Sentence: 'Furthermore , to our great regret , the Tibetan question continues to be treated by our institutions of national power under the seal of an inadmissable obfuscation concerning the historic truth : Tibet is considered to be an integral part of China even though it was a sovereign state before the invasion of 1950 .', Argument/Subject 1: 'tibet', Argument/Subject 2: 'china'

SOLUTION:
be part of