<http://schema.org/headline>
"\u304A\u8CA1\u5E03\u306B\u3082\u512A\u3057\u3044\uFF01\u300C\u30B9\u30FC\u30D7\u30B8\u30E3\u30FC\u30C0\u30A4\u30A8\u30C3\u30C8\u300D\u306E\u30B3\u30C4"^^<http://www.w3.org/2001/XMLSchema#string>
<http://howcollect.jp/article/6329>