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.

Company : Keio Plaza Hotel Tokyo Thursday, August 20, 2015 10:35AM IST (5:05AM GMT) Keio Plaza Hotel Tokyo Hosts A Photo Exhibition"The Joy of Sports Photography 2015" Co-sponsored by The Mainichi Newspapers and Sports Nippon Newspapers Tokyo, Japan Keio Plaza Hotel (KPH), located in Shinjuku, Tokyo, will hold a photographic exhibition of various top Japanese professional athletes entitled “The Joy of Sports Photography 2015” from September 1 st to October 31 st , 2015.

Answer: location_of_formation: Keio, Tokyo