About: http://webisa.webdatacommons.org/81786183

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	In this way, if one set of data is affected by an artifact, such as glare, shadow, or other obstruction, the other set of data provides a back-up that may not be affected by the artifact.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au