About: http://webisa.webdatacommons.org/437867498

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	At first, the Greeks mostly enslaved each other, but later, as their empire expanded into Asia, the Mediterranean basin and north Africa, their slave population became quite cosmopolitan.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com