About: http://webisa.webdatacommons.org/246521991

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 substrate may be crystalline material such as quartz, but preferably is a less expensive material such as low temperature glass.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr