<http://schema.org/description>
"Scientists say air and ground surveys have allowed them to confirm the existence of an ancient impact crater buried beneath a town in Iowa."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Science_News/2013/07/10/Surveys-reveal-ancient-impact-crater-beneath-Iowa-town/UPI-14421373484460/?spt=mps&or=5>