<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.codingforums.com/forum-feedback-and-announcements/23474-xhtml-css-layouts-examples.html?s=16dd6c0a1cb2ff8bb2eb28f858a0a56a>