<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<https://community.skype.com/t5/Apoio-ao-Usu%C3%A1rio-Arquivo/Problemas-com-cr%C3%A9dito-Skype/m-p/1405771>