<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.ubu.ru/krasnodar/knigi_i_zhurnaly/prodayu_sbornik_samostoyatelnykh_rabot_po_khimii10_klassiinovoshinskiy_150825>