About: http://webisa.webdatacommons.org/419682070

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	Because the rock samples brought back by the Apollo missions, which reveal ages of between 3.2 & 4 billion years old are mainly rocks and dust blasted off from the planet Mars.
http://www.w3.org/ns/prov#wasQuotedFrom	gks.uk.com