<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.codingforums.com/php/305149-free-php-scripts-hotel-booking-system-appointment-scheduling-system.html?s=6381406c612ae963f54086fe0d2f4c9b>