About: http://webisa.webdatacommons.org/15972048

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	Their analysis looked at lead and other trace elements and isotopes -- cousins in the same elemental family that differ in atomic weight due to natural radioactive decay.
http://www.w3.org/ns/prov#wasQuotedFrom	starbulletin.com