user: Question: What surface was played on on October 3, 2010?
Columns: ['Date', 'Tournament', 'Surface', 'Tier', 'Opponent in the final', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['September 15, 2002', 'Sofia', 'Clay', 'ITF $25k', 'Desislava Topalova', '6–3, 4–6, 6–0']
SQL:

assistant: SELECT "Surface" FROM "Table" WHERE "Date" = 'October 3, 2010';