<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.getdpi.com/forum/gear-fs-or-wtb/35088-fs-leica-m-elmarit-90mm-f2-8-e-46-latest-version-build-hood.html>