https://headlines.yahoo.co.jp/hl?a=20171201-00007048-bengocom-soci

https://www.nikkei.com/article/DGXMZO24108870Q7A131C1L83000/

http://blog.livedoor.jp/schulze/archives/52202614.html

https://this.kiji.is/308897792163038305

https://twitter.com/ogasawarajun/status/936144124738117634/