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:
| Date | Tournament | Surface | Opponent | Score |
| --- | --- | --- | --- | --- |
| 19 July 2004 | Tampere , Finland | Clay | Boris Pašanski | 6–2, 3–6, 6–2 |
| 20 August 2007 | Manerbio , Italy | Clay | Jiří Vaněk | 6–0, 6–4 |
| 27 August 2007 | Freudenstadt , Germany | Clay | Ivo Minář | 7–5, 6–3 |
| 28 April 2008 | Rome , Italy | Clay | Eduardo Schwank | 6–3, 6–7 (2–7) , 7–6 (7–3) |
| 12 May 2008 | Aarhus , Denmark | Clay | Daniel Gimeno-Traver | 7–5, 7–5 |
| 13 March 2011 | Santiago , Chile | Clay | Máximo González | 7–5, 0–6, 6–2 |
| 19 September 2011 | Szczecin , Poland | Clay | Rui Machado | 2–6, 7–5, 6–2 |
| 29 July 2012 | Tampere , Finland | Clay | João Sousa | 6–7 (5–7) , 4–6 |
Question:
What is Surface, when Opponent is "Jiří Vaněk"?
Answer:
Clay