About: http://webisa.webdatacommons.org/128887500

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	We are not sure if the object was a meteoroid or a comet, but it exploded in midair with an energy of about 20 to 40 megatons of TNT!We think that asteroid impacts are even more rare.
http://www.w3.org/ns/prov#wasQuotedFrom	slideshare.net