user: Question: What is the Date at Memorial Stadium • Minneapolis, MN with an Attendance of 20,000, and a Result of W52-0?
Columns: ['Date', 'Opponent#', 'Site', 'Result', 'Attendance']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['10/06/1928', 'Creighton', 'Memorial Stadium • Minneapolis, MN', 'W40-0', '20,000']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Site" = 'Memorial Stadium • Minneapolis, MN' AND "Attendance" = '20,000' AND "Result" = 'W52-0';