About: http://webisa.webdatacommons.org/351635352

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	Regarding huge in time, for example Mars might have been like nowadays's earth one billion years ago with elaborate civilisations and yet we now struggle to find a trace of life[citation needed].
http://www.w3.org/ns/prov#wasQuotedFrom	explainxkcd.com