About: http://webisa.webdatacommons.org/319846777

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	But different chemical elements or compounds have different kinds of contamination that produce different kinds of dating errors.
http://www.w3.org/ns/prov#wasQuotedFrom	slashdot.org