About: http://webisa.webdatacommons.org/396109844

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	By the time of the Civil War, Pittsburgh was a manufacturing center with a population of 50,000.
http://www.w3.org/ns/prov#wasQuotedFrom	smithsonianeducation.org