user: Question: What is the Set 3 with a Score of 3–1, and has a Set 2 of 13–15?
Columns: ['Date', 'Score', 'Set 1', 'Set 2', 'Set 3', 'Total']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['13 Oct', '3–0', '15–2', '15–3', '15–7', '45–12']
SQL:

assistant: SELECT "Set 3" FROM "Table" WHERE "Score" = '3–1' AND "Set 2" = '13–15';