<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.e-teach.ch/blog/?post/2011/09/15/LANCEMENT-%3A-e-teach-annonce-ChallengeMonitor%2C-sa-plate-forme-de-jeu-concours-qui-change-la-fa%C3%A7on-de-former-vos-%C3%A9quipes>