About: http://webisa.webdatacommons.org/406594165

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	The purpose of the heat treatment is threefold: (1) to convert the tungsten to tungsten oxide; (2) to facilitate interaction between the tungsten oxide and the silica; and (3) to remove water and other polar compounds.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com