About: http://webisa.webdatacommons.org/219104076

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	The sulfite is a preservative and the acid helps extend it is life, mostly by eliminating all remnants of the developer.
http://www.w3.org/ns/prov#wasQuotedFrom	largeformatphotography.info