<http://schema.org/headline>
"\u4E0A\u54C1\u306A\u624B\u5148\u306B\u2661\u30D7\u30E9\u30E0\u30AB\u30E9\u30FC\u306E\u30CD\u30A4\u30EB\u30C7\u30B6\u30A4\u30F3\u96C6"^^<http://www.w3.org/2001/XMLSchema#string>
<http://itnail.jp/articles/pviFW>