About: http://webisa.webdatacommons.org/82231309

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	??? Some visual aids, for example films and slides, may be expensive, and may require special equipment, like projectors, in order to be displayed.
http://www.w3.org/ns/prov#wasQuotedFrom	nzdl.org