<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<https://store.kobobooks.com/en-us/book/OpenLayers-2-10-Beginners-Guide/MZ2tDvg0zEGsm83av_JLzg?MixID=MZ2tDvg0zEGsm83av_JLzg&PageNumber=1>