About: http://webisa.webdatacommons.org/254817494

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	FIG. 2a is an example of a front-beam hologram and FIG. 2b is an example of a back-beam hologram.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com