About: http://webisa.webdatacommons.org/183763807

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	With regard to the space between the outer shielding envelope 58 and the bulb proper, such space acts as an insulating zone and may be filled with air, or preferably, an inert gas.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca