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https://www.google.com/amp/s/m.huffingtonpost.jp/amp/2018/04/27/joshima-shigeru_a_23422406/#ampshare=https://www.huffingtonpost.jp/2018/04/27/joshima-shigeru_a_23422406/
http://news.livedoor.com/lite/article_detail/14643943/
http://biz-journal.jp/i/gj/2018/04/post_6449_entry.html