<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<https://community.skype.com/t5/Pagos-cr%C3%A9dito-y-seguridad/Contratar-una-l%C3%ADnea-800/m-p/1503109>