https://headlines.yahoo.co.jp/hl?a=20180208-00010002-huffpost-soci

http://www.tokyo-np.co.jp/article/politics/list/201802/CK2018020402000114.html

https://mainichi.jp/articles/20180207/ddl/k22/010/251000c

https://mainichi.jp/articles/20170514/k00/00m/040/082000c

https://headlines.yahoo.co.jp/hl?a=20180207-00000061-asahi-soci