About: http://webisa.webdatacommons.org/201413697

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	A variety of substances, including light water, heavy water, air, Carbon dioxide, Helium, molten metals such as Sodium, Sodium-Potassium alloy, Lead and Lead-Bismuth alloy as well as hydrocarbons (oils), have been used for this purpose.
http://www.w3.org/ns/prov#wasQuotedFrom	mpoweruk.com