<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://store.kobobooks.com/en-us/category/birds-1?categoryname=Birds&categoryid=5PhJu39Wt0C89HhBwX3Q7w&page=2&s=numpurchases&w=false>