Funso (Chichewa): Mtengo wa chimanga wapakatikati  m'boma la Dowa ndi uti??
Question (English): What is the average Maize price in the district of Dowa on the most recent collection date?
Table: commodity_prices (difficulty: hard)
SQL: SELECT AVG(price) AS average_price
FROM commodity_prices
WHERE commodity = 'Maize'
  AND district = 'Dowa'
  AND collection_date = (
      SELECT MAX(collection_date)
      FROM commodity_prices
      WHERE commodity = 'Maize'
        AND district = 'Dowa'
  );
Result: [(592.5,)]