<http://schema.org/keywords>
"\u771F\u5B9F\u77E5\u308A\u305F\u3044\u8CAC\u4EFB\u8FFD\u53CA\u3078"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.asahi.com/articles/ASJ2B5GRFJ2BUOOB00X.html?ref=rss>