About: http://webisa.webdatacommons.org/421426579

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	Other planets and objects, such as Venus, do not have magnetic fields because there is not a fluid or gas dynamo in their core; or because the crust of the planet or object does not contain magnetic material.]
http://www.w3.org/ns/prov#wasQuotedFrom	berkeley.edu