https://www.google.com/amp/s/www.bbc.com/japanese/amp/42984975#ampshare=http://www.bbc.com/japanese/42984975
http://news.livedoor.com/lite/topics_detail/14558447/
https://www.google.com/amp/embedded?v=7.24.32.21.arm&hl=ja#vgi=12___h0&cu=https%253A%252F%252Fmainichi.jp%252Farticles%252F20180410%252Fk00%252F00e%252F030%252F215000c&=https%253A%252F%252Fmainichi.jp%252Farticles%252F20180410%252Fk00%252F00e%252F030%252F215000c.amp&idx=0
https://www.google.com/amp/s/www.zakzak.co.jp/soc/amp/180405/soc1804050017-a.html#ampshare=https://www.zakzak.co.jp/soc/news/180405/soc1804050017-n1.html
https://www.sponichi.co.jp/entertainment/news/2018/04/09/kiji/20180409s00041000336000c.html