<http://schema.org/headline>
"\u30A8\u30ED\u304B\u308F\u30EA\u30C3\u30D7\u3067\u30BB\u30AF\u30B7\u30FC\u306B\u2661\u305F\u3060\u4ECA\u30EA\u30C3\u30D7\u30CD\u30A4\u30EB\u5897\u6B96\u4E2D\u2661"^^<http://www.w3.org/2001/XMLSchema#string>
<http://itnail.jp/articles/sxnjx>