About: http://webisa.webdatacommons.org/431333952

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	To further constrain the hotspot and the Loa and Kea trends, geochemists rely on elements such as the isotopes of lead (Pb), strontium (Sr), hafnium (Hf), neodymium (Nd), and helium (He).
http://www.w3.org/ns/prov#wasQuotedFrom	usgs.gov