Funso (Chichewa): Ndi mbewu iti yomwe inali ndi zokolola zambiri ku Mzimba?
Question (English): Which crop had the highest yield in Mzimba?
Table: production (difficulty: easy)
SQL: SELECT crop, MAX(yield) AS max_yield FROM production WHERE district = 'Mzimba';
Result: [('Cassava', 428043.29)]