About: http://webisa.webdatacommons.org/388842826

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	urces ??? for example, articles and essays, maps, graphs and other visuals, and primary documents.
http://www.w3.org/ns/prov#wasQuotedFrom	pbs.org