Assertion: stone town | /r/CapableOf | retain its importance
Facets:
value: as the main city of zanzibar
type: OTHER
Source sentences:
text: Former capital of the Zanzibar Sultanate, and flourishing centre of the spice trade as well as the slave trade in the 19th century, it retained its importance as the main city of Zanzibar during the period of the British protectorate.