<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.misterart.com/easels/table-top-easels/fb~martin-f-weber~fp~15-35~/martin-f-weber-angelina-aluminum-table-top-folding-easel.html>