About: http://webisa.webdatacommons.org/217688937

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	As iodine and other compounds proved too expensive and complex to produce,
http://www.w3.org/ns/prov#wasQuotedFrom	environmentalhistory.org