user: Question: What is the total average for the england team when the wickets are less than 18, the best bowling is 4/138, and there are less than 3 matches?
Columns: ['Player', 'Team', 'Matches', 'Wickets', 'Average', 'Best Bowling']
Types: ['text', 'text', 'real', 'real', 'real', 'text']
Sample row: ['Ray Lindwall', 'Australia', 5.0, 27.0, 19.62, '6/20']
SQL:

assistant: SELECT SUM("Average") FROM "Table" WHERE "Team" = 'england' AND "Wickets" < 18.0 AND "Best Bowling" = '4/138' AND "Matches" < 3.0;