About: http://webisa.webdatacommons.org/210846186

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	Double-check with your students and ask your students if slavery was permitted in Northern states such as New York and Massachusetts.
http://www.w3.org/ns/prov#wasQuotedFrom	pbs.org