<http://schema.org/headline>
"\u7B2C3\u56DE\u3000\u9078\u629E\u9805\u76EE\u4EE5\u5916\u304C\u307C\u3051\u308B\u30E1\u30CB\u30E5\u30FC"^^<http://www.w3.org/2001/XMLSchema#string>
<http://gihyo.jp/design/serial/01/css-animation/0003>