<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://store.kobobooks.com/en-us/category/input-output-equipment?categoryname=foo&categoryid=AxZa-kofUkezHl_1hLY2ow&page=1&s=numpurchases&w=false>