Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Outcome | Date | Tournament | Surface | Opponent | Score |
| --- | --- | --- | --- | --- | --- |
| Winner | 28 March 2005 | Grasse , France | Clay | Stefan Wauters | 6–2, 6–3 |
| Runner-up | 9 January 2006 | Barnstaple , United Kingdom | Hard | Stéphane Robert | 6–7 (3–7) , 1–6 |
| Runner-up | 20 March 2006 | Khemisset , Morocco | Clay | Dušan Karol | 6–3, 3–6, 6–7 (7–9) |
| Winner | 11 June 2007 | Košice , Slovakia | Clay | Denis Gremelmayr | 4–6, 7–6 (7–5) , 6–4 |
| Winner | 22 October 2007 | Barnstaple , United Kingdom | Hard | Stéphane Bohli | 7–6 (7–4) , 6–7 (1–7) , 7–5 |
| Runner-up | 12 May 2008 | Marrakech , Morocco | Clay | Gaël Monfils | 6–7 (2–7) , 6–7 (6–8) |
| Winner | 2 August 2008 | Graz , Austria | Clay | Sergio Roitman | 6–2, 6–1 |
| Runner-up | 12 June 2011 | Nottingham , United Kingdom | Grass | Dudi Sela | 4–6, 6–3, 5–7 |
| Winner | 2 October 2011 | Madrid , Spain | Clay | Daniel Gimeno-Traver | 6–1, 5–7, 7–6 (7–3) |
| Winner | 7 January 2012 | Nouméa , New Caledonia | Hard | Adrián Menéndez | 6–4, 6–3 |
| Runner-up | 6 May 2012 | Tunis , Tunisia | Clay | Rubén Ramírez Hidalgo | 1–6, 4–6 |
Question:
What is the surface of the tournament with a runner-up outcome and dudi sela as the opponent?
Answer:
Grass