About: http://webisa.webdatacommons.org/157753943

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	Materials used for radiocarbon dating are wood, charcoal, leaves, humus in soils, and other organic material.
http://www.w3.org/ns/prov#wasQuotedFrom	usgs.gov