About: http://webisa.webdatacommons.org/439533633

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	Note that they say ???half-life or decay constant???. ???Decay constant??? refers to using something other than 0.5 (half, for half-life) as the constant for measuring the decay.
http://www.w3.org/ns/prov#wasQuotedFrom	wattsupwiththat.com