<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.zen-cart.com/showthread.php?210451-Model-Number-showing-on-Product-page-for-some-only&s=48426808c5b6d91d31e19ecb18385249&p=1221911>