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.

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'
be member of

Sentence: 'This is now very often the predicament of those who convert to Islam when they marry a Muslim .', Argument/Subject 1: 'muslim', Argument/Subject 2: 'islam'
convert to

Sentence: 'This is significantly funded by the European Union with members in Austria , Sweden and UK.', Argument/Subject 1: 'austrium', Argument/Subject 2: 'european union'
be member of