<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.tanga.com/forum/blogs/11ff76a9d7/tanga-s-12-days-of-giveaways-enter-now-for-your-chance-to-win-an-incredible-prize>