What is the relationship between 'Keio' and 'Tokyo' in the context of the input sentence.
Options: industry, subsidiary, location of formation, manufacturer

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.
location of formation