<http://schema.org/description>
"Running too many marathons in a lifetime could be dangerous for the heart and lead to an early death, U.S. medical researchers said."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Health_News/2012/11/30/Study-Too-many-marathons-can-kill/UPI-28821354279401/>