http://headlines.yahoo.co.jp/hl?a=20160224-00050066-yom-soci

http://www.asahi.com/articles/ASJ2R66ZBJ2RTIPE03D.html

http://news.goo.ne.jp/article/asahi/nation/ASJ1R51DKJ1RPTIL00C.html

http://blog.livedoor.jp/akasaka_z/archives/50544309.html

http://www.asahi.com/articles/ASJ2R61QHJ2RIIPE04B.html