user: Question: On what Date was The Open Championship in Japan?
Columns: ['Player', 'Country', 'Major', 'Date', 'To par', 'Finish']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Johnny Miller', 'United States', 'U.S. Open', 'Jun 17, 1973', '–8', '1']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Major" = 'The Open Championship' AND "Country" = 'Japan';