<http://schema.org/headline>
"Office 2010\u306E\u6559\u79D1\u66F8\u30FB\u72EC\u7FD2\u30C6\u30AD\u30B9\u30C8\u306B\u6700\u9069\uFF01\uFF1A\u65B0\u520A\u30D4\u30C3\u30AF\u30A2\u30C3\u30D7"^^<http://www.w3.org/2001/XMLSchema#string>
<http://gihyo.jp/book/pickup/2011/0021>