About: http://webisa.webdatacommons.org/29943758

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	Mars and Earth in particular have been trading rocks throughout their history, and it is clear that microbes could hitch a ride and be transported in relative safety from one planet to the other.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com