<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<https://community.skype.com/t5/Archive-Korean/%EB%A7%A5%EC%9A%A9-%EC%8A%A4%EC%B9%B4%EC%9D%B4%ED%94%84/m-p/1463126>