About: http://webisa.webdatacommons.org/183668422

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	Comets, generally, are made up of the types of materials that would be gasses on Earth, but are frozen solid in outer space.
http://www.w3.org/ns/prov#wasQuotedFrom	nationalpost.com