About: http://webisa.webdatacommons.org/213355049

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	Birefringent materials, including glassy materials under internal or external stress and crystals, are generally anisotropic.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com