People on vacation fish as the Japan Atomic Energy Agency's Monju nuclear power plant, a sodium-cooled fast reactor, is pictured in the background in Tsuruga, Fukui prefecture, July 2, 2011. REUTERS/Issei Kato/Files

A man walks past a display of the Nikkei average and other market indices outside a brokerage in Tokyo, Japan April 19, 2016. REUTERS/Thomas Peter

International Tennis Federation (ITF) President David Haggerty (L-R), Tennis Integrity Board Chairman Philip Brook and Association of Tennis Professionals (ATP) Chairman Chris Kermode hold a news conference at the Australian Open tennis tournament at Melbourne Park, Australia, January 27, 2016. REUTERS/Jason Reed

File photograph of Tyson Gay from the U.S. reacting after the men's 100m final during the 15th IAAF World Championships at the National Stadium in Beijing, China August 23, 2015. REUTERS/Lucy Nicholson

A Japanese flag flutters atop the Bank of Japan building in Tokyo, Japan, September 21, 2016. REUTERS/Toru Hanai

Construction cranes are seen on building sites which fill the horizon in Paris, France, August 26, 2016. REUTERS/Regis Duvignau

Visitors wait for a fountain performance in a central business district during the weekend after the G20 summit in Hangzhou, Zhejiang province, China September 11, 2016. Picture taken September 11, 2016. REUTERS/Stringer

London rabbi Julia Neuberger poses for a photograph with the old German passport of her grandmother, Hermine Sara Rosenthal, at the West London Synagogue in London, Britain September 20, 2016. REUTERS/Stefan Wermuth