About: http://webisa.webdatacommons.org/109736829

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	Gases, liquids, glass and other amorphous substances are optically isotropic.
http://www.w3.org/ns/prov#wasQuotedFrom	rockhounds.com