<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.codingforums.com/javascript-programming/280407-validate-date-field-mm-dd-yyyy-legit-date.html?s=e9a5567bd44efa770b4ae15556f282fc>