<prompt> Jedwali: Sehemu. Mapato. Jamii. Sehemu ya 1 200 A Sehemu ya 2 250 B Sehemu ya 3 300 AKutokana na meza ifuatayo, kuandika query kupata mapato ya jumla kutoka vitu vya jamii A.  <response>: The SQL query for finding the total revenue from items of category A would be:SELECT SUMRevenue AS TotalRevenue FROM TableWHERE Category A;Based on the provided input data, this query will return the result: 500 which is the sum of the revenue of Item 1 and Item 3, both belonging to category A. 