About: http://webisa.webdatacommons.org/406029862

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	1914-1918 Chemical weapons, including chlorine, phosgene and mustard agents, are used during World War I, killing more than 90,000.
http://www.w3.org/ns/prov#wasQuotedFrom	bbc.co.uk