About: http://webisa.webdatacommons.org/356085719

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	A planetary nebula is a dying star (recently a red giant) that has cast off its outer layers.
http://www.w3.org/ns/prov#wasQuotedFrom	spacedaily.com