About: http://webisa.webdatacommons.org/2875527

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	Explaining, analyzing, interpreting, synthesizing and evaluating historical sources and mathematical and visual data including maps, graphs, and tables
http://www.w3.org/ns/prov#wasQuotedFrom	ushistory.org