user: Question: What is the sum of Maidens with a number of Matches that is 2?
Columns: ['Player', 'Matches', 'Overs', 'Maidens', 'Runs', 'Wickets', 'Average', 'Economy', 'Best Bowling']
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'text', 'real', 'text']
Sample row: ['Ajmal Shahzad', 1.0, 24.0, 6.0, 64.0, 3.0, '21.33', 2.67, '2/43']
SQL:

assistant: SELECT SUM("Maidens") FROM "Table" WHERE "Matches" = 2.0;