<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://store.kobobooks.com/ebook/the-physical-papers-of-henry-augustus-rowland-johns-hopkins-university-1876-1901-collected-for-publication-by-a-committee-of-the-faculty-of-the-university>