user: Question: Where was the tournament that happened in 1987 on a Clay surface?
Columns: ['Date', 'Tournament', 'Surface', 'Partnering', 'Opponent in the final', 'Score']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1985.0, 'Stockholm , Sweden', 'Hard (i)', 'Andrés Gómez', 'Mike De Palmer Gary Donnelly', '6–3, 6–4']
SQL:

assistant: SELECT "Tournament" FROM "Table" WHERE "Date" = 1987.0 AND "Surface" = 'Clay';