About: http://webisa.webdatacommons.org/172845538

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	Such historians as Edward Gibbon and Arnold Toynbee especially have speculated on this issue.
http://www.w3.org/ns/prov#wasQuotedFrom	newworldencyclopedia.org