user: Question: What is JoAnne Carner's average score in Canadian Women's Open games that she has won?
Columns: ['Year', 'Champion', 'Country', 'Score', 'To par', 'Tournament Location']
Types: ['real', 'text', 'text', 'real', 'text', 'text']
Sample row: [1978.0, 'JoAnne Carner (2)', 'United States', 278.0, '−14', "St. George's Golf and Country Club"]
SQL:

assistant: SELECT AVG("Score") FROM "Table" WHERE "Champion" = 'JoAnne Carner';