About: http://webisa.webdatacommons.org/186385545

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	Potassium-40 is a beta emitter, and also a gamma emitter, like barium-137m.
http://www.w3.org/ns/prov#wasQuotedFrom	nationalgeographic.com