About: http://webisa.webdatacommons.org/2233013

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	For example, a birefringent element consisting of a material such as calcite, rutile, lithium niobate, YVO4-based crystals, and the like could be used as the beam displacers in the present invention.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com