<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.free-ringtones.cc/ringtones/Ennio%20morricone%20-%20The%20good%2C%20the%20bad%2C%20and%20the%20ugly/81246>