<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.express.co.uk/sport/football/458982/Jan-Vertonghen-looking-to-build-on-Everton-win-ahead-of-Liverpool-test?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+daily-express-football-news+%28Daily+Express+%3A%3A+Football+Feed%29>