126113
Arab - Swahili slave traders were based here from about 1860 and sent caravans overland to Zanzibar .
 location: Zanzibar
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Zanzibar 
Answer:
 location: Zanzibar