instruction:
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.
question:
Sentence: 'The largest member of OPEC , Saudi Arabia , controls one-fifth of the world 's crude reserves and constitutes more than 10 percent of world daily production of crude oil , making it one of the most critical suppliers influencing this market .', Argument/Subject 1: 'saudus arabium', Argument/Subject 2: 'opec'
answer:
be member of


question:
Sentence: 'Paper presented at the Association for the Advancement of Applied Sport Psychology Conference .', Argument/Subject 1: 'paper', Argument/Subject 2: 'conference'
answer:
present at


question:
Sentence: 'PlayStation is a registered trademark of Sony Computer Entertainment Inc. Xbox 360 is a trademark of Microsoft Corporation .', Argument/Subject 1: 'xbox', Argument/Subject 2: 'microsoft corporation'
answer:

be trademark of