user: Question: What is the Score of the Tournament played on Clay Surface on May 5, 1999?
Columns: ['Date', 'Tournament', 'Surface', 'Opponent in the final', 'Score']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['May 5, 1999', 'Esslingen , Germany', 'Clay', 'Martin Spottl', '7–6, 6–2']
SQL:

assistant: SELECT "Score" FROM "Table" WHERE "Surface" = 'Clay' AND "Date" = 'May 5, 1999';