<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.tanga.com/users/new?return_path=%2Fdeals%2F5e8683efed%2Fgyro-metal-arrow-hawk-3-5ch-electric-rtf-rc-helicopter>