https://toyokeizai.net/articles/-/389920?display=b
https://jp.mobile.reuters.com/article/amp/idJPKBN2840A3
https://news.yahoo.co.jp/articles/468823530bb795058b5d12e78a29eb6889f409c1
https://m.finance.yahoo.co.jp/fx/news/detail/20201125-00000004-dzh-fx