user: Question: Against Opponent in the Final Ivan Lendl, on a Surface of Clay, with an Outcome of Runner-up, where was the Championship?
Columns: ['Outcome', 'Date', 'Championship', 'Surface', 'Opponent in the final', 'Score in the final']
Types: ['text', 'real', 'text', 'text', 'text', 'text']
Sample row: ['Runner-up', 1975.0, 'Båstad , Sweden', 'Clay', 'Manuel Orantes', '0–6, 3–6']
SQL:

assistant: SELECT "Championship" FROM "Table" WHERE "Outcome" = 'Runner-up' AND "Surface" = 'Clay' AND "Opponent in the final" = 'Ivan Lendl';