user: Question: Which artist created the silver dollar for the 400th Anniversary of Quebec?
Columns: ['Year', 'Theme', 'Artist', 'Mintage', 'Issue Price']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2005.0, "40th Anniversary, Canada's Flag", 'William Woodruff', 'N/A', '$84.95']
SQL:

assistant: SELECT "Artist" FROM "Table" WHERE "Theme" = '400th Anniversary of Quebec';