Given the input sentence, please extract the subject and object containing a certain relation in the sentence according to the following relation types, in the format of "relation1: word1, word2; relation2: word3, word4". Relations include: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

A “Grexit” (Greek Exit) could influence PIIGS nations to leave the Eurozone, Great Britain’s upcoming referendum to exit (“Brexit”) the European Union (EU), and France’s potential exit (“Frexit”) from both the Euro and EU if Marine LePen’s nationalists come to power.

Answer: operator: EU, European Union