<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/SearchAction>
<http://www.codingforums.com/dom-and-json-scripting/281832-change-span-tag-text-using-dropdown-select.html?s=d04fa1cabb3526acbbf2bb82d95360c9>