About: http://webisa.webdatacommons.org/2828388

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	Such a negative can also be used for alternative processes such as Cyanotype.
http://www.w3.org/ns/prov#wasQuotedFrom	ag-photographic.co.uk