About: http://webisa.webdatacommons.org/194815984

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	Soon after the discovery of radium it was suspected that the rays given out by radium and other radioactive substance were not of one kind.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com