<http://schema.org/description>
"A new detailed study of a supernova has allowed scientist to connect the blast with a specific dying stay, a Nitrogen-rich Wolf Rayet star."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Science_News/2014/05/22/Supernova-discovery-reveals-how-giant-Wolf-Rayet-stars-die/6041400727302/>