user: Question: What is the league on 5 October 1997?
Columns: ['Season', 'Match', 'Result', 'League', 'Date']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1971–72', 'Napoli-Roma', '4–0', 'Serie A', '12 December 1971']
SQL:

assistant: SELECT "League" FROM "Table" WHERE "Date" = '5 October 1997';