Possible Clues:

• Nothing relating to ears or to languages
• O, O, tea, I see for a race in Africa
• Nothing to do with the ear or to do with the river
• Provincial group in charge of African people
• Like a river: nothing to do with the ears
• In Africa such tongues have nothing to do with ears
• Group of East African languages
• Northern Ireland group in charge of river line as adjusted
• Relating to river — nothing to do with ears!
• Of the longest river in Africa