About: http://webisa.webdatacommons.org/116872142

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 back surface 802 may be made of a thermally conductive material, as for example aluminum, and the bottom section of each illumination device 100 is mounted such that a good thermal contact is made with the back surface 802.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com