<http://schema.org/headline>
"\u7B2C33\u56DE\u3000Rubyist\u306E\u305F\u3081\u306EMongoDB\u5165\u9580\uFF082\uFF09\uFF1ARuby Freaks Lounge"^^<http://www.w3.org/2001/XMLSchema#string>
<http://gihyo.jp/dev/serial/01/ruby/0033>