<http://schema.org/headline>
"\u304B\u307E\u307C\u3053\u677F\u304B\u3089\u304B\u307E\u307C\u3053\u3092\u4E0A\u624B\u306B\u306F\u304C\u3059\u65B9\u6CD5"^^<http://www.w3.org/2001/XMLSchema#string>
<http://howcollect.jp/article/670>