<http://schema.org/headline>
"2016\u5E74\u306EWeb\u30A2\u30AF\u30BB\u30B7\u30D3\u30EA\u30C6\u30A3\uFF1A\u65B0\u6625\u7279\u5225\u4F01\u753B"^^<http://www.w3.org/2001/XMLSchema#string>
<http://gihyo.jp/design/column/newyear/2016/web-accessibility-prospect>