sentences:  The slaves of the Tuareg were generally of Sub-Saharan African heritage (Nilo-Saharan or Niger-Congo ethno-linguistic origins) and were captured during raids.The word "ikelan" itself means "to be black", an allusion to most of the slaves.In the post-colonial literature, the alternate terms for "Ikelan" include "Bellah-iklan" or just "Bellah" derived from a Songhay word.