About: http://webisa.webdatacommons.org/82391074

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	Both historically and today, such problems might include securing enough food, adjusting to demographic, climatic, or other environmental changes, dealing with aggression within or between societies, organising society, and so on.
http://www.w3.org/ns/prov#wasQuotedFrom	energybulletin.net