About: http://webisa.webdatacommons.org/218847819

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 cylinder 156 is coated with a material such as silicon to render it opaque in the frequency range of the pyrometers.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com