<http://schema.org/description>
"Bells tolled in New York, Washington and Shanksville, Pa., Wednesday to commemorate the Sept. 11, 2001, terror attacks that led to war in Iraq and Afghanistan."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Top_News/US/2013/09/11/Sept-11-memorials-held-in-New-York-Washington-Shanksville-Pa/UPI-35791378902628/>