About: http://webisa.webdatacommons.org/378199833

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	One of the electrodes of this generator is made up of a vitreous tube 29 which may be made of material such as lead glass, borosilicate glass sold under the trademark Pyrex, fused quartz, or the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com