#Nilo-Saharan_language__Nilo-Saharan  a family of East African languages spoken by Nilotic peoples from the Sahara south to Kenya and Tanzania
  supertype:  #natural_language__naturallanguage__tongue  a human written or spoken language used by a community; opposed to e.g. a computer language
  subtype:  #Chari-Nile  a group of Nilo-Saharan language spoken in parts of the Sudan and Zaire and Uganda and Tanzania
     subtype:  #Nilotic_language__Nilotic  a group of languages of East Africa belonging to the Chari-Nile group
        subtype:  #Dinka  a Nilotic language
        subtype:  #Luo  a Nilotic language
        subtype:  #Masai  a Nilotic language
  subtype:  #Saharan  a Nilo-Saharan language spoken in parts of Chad
  subtype:  #Songhai  a Nilo-Saharan language spoken by the Songhai people in Mali and Niger

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