About: http://webisa.webdatacommons.org/377159199

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	Sunlight beating down on the comet???s nucleus (core) vaporizes dust-impregnated ice to form a cloud or coma, a temporary atmosphere of water vapor, dust, carbon dioxide, ammonia and other gases.
http://www.w3.org/ns/prov#wasQuotedFrom	universetoday.com