user: Question: What is the Overall of 15 Club team with a Nationality of Canada?
Columns: ['Round', 'Overall', 'Player', 'Position', 'Nationality', 'Club team']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, '15', 'Cody Ceci', 'Defense', 'Canada', "Ottawa 67's (OHL)"]
SQL:

assistant: SELECT "Club team" FROM "Table" WHERE "Nationality" = 'Canada' AND "Overall" = '15';