<http://schema.org/description>
"TL;DR Use ~&amp;gt; instead. Having spent far, far too much time with Rubygems dependencies, and the problems that arise with unusual combinations, I am ready to come right out and say it: you basically never, ever want to use a..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://yehudakatz.com/2010/08/21/using-considered-harmful-or-whats-wrong-with/>