<http://webisa.webdatacommons.org/375441684>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<archive.org> .
<http://webisa.webdatacommons.org/375441684>	<http://www.w3.org/ns/prov#value>	"have existed in west Africa, notably at Ghana, Timbuktu, Kano," .
<http://webisa.webdatacommons.org/prov/162496380>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/375441684> .
<http://webisa.webdatacommons.org/375441684>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .