<http://webisa.webdatacommons.org/278613107>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/278613107>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<marxists.org> .
<http://webisa.webdatacommons.org/278613107>	<http://www.w3.org/ns/prov#value>	"It is known that Aristotle, mistaking for an absolute sociological law a law relative to his own time, declared that slavery was a natural institution, and that men were divided, by Nature, into two classes ??? free men and slaves." .
<http://webisa.webdatacommons.org/prov/67219348>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/278613107> .