About: http://webisa.webdatacommons.org/243241261

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	not allowed, at that point the slave became a free person ??? even if he or she later returned to a slave state, such as Missouri.
http://www.w3.org/ns/prov#wasQuotedFrom	mo.gov