<http://schema.org/StartDate>
"2012-04-28T17:00:00Z"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.maxpreps.com/games/softball-spring-12/galena-vs-north-valleys/4-28-2012-QyJWwvfEXkiRC_-mN3r2tQ.htm>