<http://schema.org/headline>
"\u300E\u3042\u3055\u304C\u6765\u305F\u300F\u6797\u4E0E\u4E00\u300C30\u6B73\u524D\u306F\u53E3\u8AAC\u3044\u305F\u3053\u3068\u306F1\u5EA6\u3082\u306A\u3044\u300D"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.jprime.jp/articles/-/3820>