<http://schema.org/headline>
"\u51B7\u3048\u305F\u5973\u306F\u604B\u611B\u30D9\u30BF\uFF1F\uFF01\u4ECA\u8A71\u984C\u306E\u51B7\u3048\u53D6\u308A\u5065\u5EB7\u6CD5\u3068\u306F"^^<http://www.w3.org/2001/XMLSchema#string>
<http://howcollect.jp/article/5177>