<http://schema.org/headline>
"\u8CA7\u4E73\u7F8E\u5C11\u5973\u306E\u6B8B\u5FF5\u306A\u304A\u3063\u3071\u3044\u306E\u8C37\u9593\u753B\u50CF"^^<http://www.w3.org/2001/XMLSchema#string>
<http://erologz.com/blog-entry-3150.html>