About: http://webisa.webdatacommons.org/261892758

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 FBI???s and other databases may be used to get a general idea of the rarity of glass having a particular refractive index.
http://www.w3.org/ns/prov#wasQuotedFrom	fbi.gov