<http://schema.org/category>
"Software &amp;gt; Software de computador &amp;gt; Sistemas operacionais"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.microsafe.com.br/mct0982_red-hat-enterprise-linux-ap-standard-1y-v5.5.npn.html?orcl=77>