About: http://webisa.webdatacommons.org/167330072

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	Separation - there is a suggestion it might have widened somewhat before the recent decrease.The 1950s measures average at 1.65.
http://www.w3.org/ns/prov#wasQuotedFrom	cloudynights.com