<http://schema.org/description>
"FreeBSD\u30D7\u30ED\u30B8\u30A7\u30AF\u30C8\u306F2\u5E74\u304A\u304D\u306B\u30B3\u30A2\u30C1\u30FC\u30E09\u540D\u3092\u9078\u6319\u3067\u9078\u51FA\u3057\u3066\u3044\u307E\u3059\u3002"^^<http://www.w3.org/2001/XMLSchema#string>
<http://gihyo.jp/admin/clip/01/fdt/201207/13>