<http://schema.org/addressRegion>
"TX"^^<http://www.w3.org/2001/XMLSchema#string>
<http://dentonregional.com/calendar/detail.dot?event_id=747afaba-35eb-4e52-82e1-cb92691620a2-recurrence@1380663000000@1380667559000&start_date=10012013173000&end_date=10012013184559>