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.

Further details of potential risks and uncertainties affecting the Group are described in the Group’s filings with the London Stock Exchange, Euronext Amsterdam and the US Securities and Exchange Commission, including in the Group’s Annual Report on Form 20-F for the year ended 31 December 2014 and the Annual Report and Accounts 2014.

Answer: location_of_formation: Euronext, Amsterdam; headquarters_location: Euronext, Amsterdam