<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://amarillas.emol.com/maestranza-garc\u00C3\u00ADa-ltda.-soc-maestranza-y-construccion-juancarlos-garcia-santibanez-y-cia-ltda>