<http://schema.org/headline>
"\u6B66\u5185\u4EAB \u521D\u3081\u3066\u8A9E\u3063\u305F\u81EA\u8EAB\u306E\u96E2\u5A5A\u3068\u30C1\u30A7\u30C3\u30AB\u30FC\u30BA\u518D\u7D50\u6210\u306E\u884C\u65B9"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.jprime.jp/articles/-/5430>