About: http://webisa.webdatacommons.org/339744304

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	Approximately 1.75 million African Americans traveled north and west to nearly every major American city in the country, most notably Chicago, Detroit, Cleveland and New York.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.com