Funso (Chichewa): Ndi mbewu ziti zomwe zikuwonetsa kukhazikika kwambiri kwa mitengo ku Blantyre?
Question (English): Which commodity shows the most stable prices in Blantyre?
Table: commodity_prices (difficulty: medium)
SQL: SELECT commodity, (MAX(price) - MIN(price)) FROM commodity_prices WHERE district = 'Blantyre' GROUP BY commodity ORDER BY (MAX(price) - MIN(price)) ASC LIMIT 1;
Result: [('Rice', 176.03)]