About: http://webisa.webdatacommons.org/186915723

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 are often referred to as ???dirty snowballs,??? being composed of bits of dust, rocks and ices, particularly carbon dioxide, carbon monoxide and water.
http://www.w3.org/ns/prov#wasQuotedFrom	methowvalleynews.com