About: http://webisa.webdatacommons.org/196873247

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	primary source???an artifact or written material such as a letter, journal, personal document, official document, or newspaper from a particular time period that can be used to learn more about that time period.
http://www.w3.org/ns/prov#wasQuotedFrom	history.org