<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/WebSite>
<http://www.codingforums.com/dom-and-json-scripting/4446-detect-if-browser-supports-createcontextualfragment.html?s=4ffa909bed2093b1be3612bd0062cee1>