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.
Input: Sentence: 'Lester Brown is the president of the Earth Policy Institute , a nonprofit interdisciplinary research organization based in Washington D.C. he us the author of Plan B : Rescuing a Planet Under Stress and a Civilization in Trouble .', Argument/Subject 1: 'lester brown', Argument/Subject 2: 'earth policy institute'
Output:
be president of