About: http://webisa.webdatacommons.org/81519788

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	Plutonium was a new element, and they didn???t have enough of it to measure the crucial properties until June 1944.
http://www.w3.org/ns/prov#wasQuotedFrom	typepad.com