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: 'Paper presented to the Global Fusion Conference , Austin , Texas .', Argument/Subject 1: 'paper', Argument/Subject 2: 'conference'
Example Output: present at

Example Input: Sentence: 'Copernicus went on to attend Cracow University where he studied optics and mathematics .', Argument/Subject 1: 'copernicus', Argument/Subject 2: 'cracow'
Example Output: attend university of

Example Input: Sentence: 'Chavez was in Rio de Janeiro to attend a two-day summit of the Mercosur trade bloc , of which Venezuela is a member along with Argentina , Brazil , Uruguay and Paraguay .', Argument/Subject 1: 'brazil', Argument/Subject 2: 'mercosur'
Example Output:
be member of