About: http://webisa.webdatacommons.org/70668938

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	Four billion years ago their wall would have been composed of minerals, including catalytic iron, nickel and molybdenum sulfides.
http://www.w3.org/ns/prov#wasQuotedFrom	ucl.ac.uk