<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://forums.vr-zone.com/mass-order-forum/682151-mo-the-combined-fiio-amplifier-dac-cable-mo-fiio-x5-dap-pre-order-4.html>