<http://schema.org/headline>
"\u53E3\u6C38\u826F\u90E8\u5CF6\u5674\u706B\u3092\u4E88\u544A\u3057\u305F\u5927\u5B66\u6559\u6388\u300C1\u5E74\u4EE5\u5185\u306B\u6771\u65E5\u672C\u3067\u3082\u58CA\u6EC5\u7684\u5674\u706B\u300D"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.jprime.jp/articles/-/6072>