About: http://webisa.webdatacommons.org/398051376

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	Both ice and organic materials, which are similar to tar or coal, were believed to have been delivered millions of years ago by comets and asteroids
http://www.w3.org/ns/prov#wasQuotedFrom	abovetopsecret.com