About: http://webisa.webdatacommons.org/394141733

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	On the other hand, many of the elements we would find very useful are rare in the crust, because they are mainly down in the core or mantle.
http://www.w3.org/ns/prov#wasQuotedFrom	futurestrust.org.nz