https://www3.nhk.or.jp/news/html/20181122/k10011720321000.html

https://news.yahoo.co.jp/byline/goharanobuo/20181106-00103222/

https://headlines.yahoo.co.jp/hl?a=20181120-00000003-withnews-soci&p=1

https://headlines.yahoo.co.jp/hl?a=20181122-00000032-jij-eurp

https://okaguchik.hatenablog.com/entry/2018/11/22/113806