About: http://webisa.webdatacommons.org/316041927

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	Slaves and serfs were typically expected to work without compensation, but some societies imposed a duty on the ???master??? to see that the slaves were properly cared for, others, such as in Russia had no such duty.
http://www.w3.org/ns/prov#wasQuotedFrom	freethoughtblogs.com