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.

BREXIT – HOW IT MIGHT PAN OUT Jul 1, 2015 The basic facts The United Kingdom ( UK ) government is committed to negotiating a new relationship between the UK and the European Union ( EU ), and holding an in / out referendum, before the end of 2017.

Answer: operator: EU, European Union