About: http://webisa.webdatacommons.org/406827487

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 time required for the gas to have effect varied according to the weather, and depended on whether it was damp or dry, cold or warm.
http://www.w3.org/ns/prov#wasQuotedFrom	holocaust-history.org