user: Question: Which Partner with the surface of Clay ended up as a Runner-up with a score of 1–6, 6–4, [10–12]?
Columns: ['Outcome', 'Date', 'Surface', 'Partner', 'Opponents', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Runner-up', '14 April 2008', 'Clay', 'Pablo Cuevas', 'Ernests Gulbis Rainer Schüttler', '5–7, 6–7 (3–7)']
SQL:

assistant: SELECT "Partner" FROM "Table" WHERE "Surface" = 'Clay' AND "Outcome" = 'Runner-up' AND "Score" = '1–6, 6–4, [10–12]';