About: http://webisa.webdatacommons.org/146901682

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	The blockade was proclaimed by President Abraham Lincoln in April 1861, and required the monitoring of 3,500 miles of Atlantic and Gulf coastline, including 12 major ports, notably New Orleans and Mobile.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org