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 in the final | Score |
| --- | --- | --- | --- | --- |
| August 14, 1994 | Carthage | Clay | Anne-Gaëlle Sidot | 5–7 6–3 6–4 |
| March 26, 1995 | Moulins | Hard Indoors | Linda Sentis | 3–6 6–3 6–2 |
| November 26, 1995 | Le Havre | Clay Indoors | Émilie Loit | 0–6 6–3 6–4 |
| February 4, 1996 | Dinan | Clay Indoors | Virginie Massart | 6–4 7–6 |
| August 11, 1996 | Carthage | Clay | Marielle Bruens | 7–5 6–4 |
| December 14, 1997 | Ismailia | Clay | Tzipora Obziler | 5–7 7–5 6–4 |
| April 30, 2000 | Bournemouth | Clay | Dragana Zarić | 7–5 6–2 |
| September 22, 2002 | Glasgow | Hard Indoors | Anne Keothavong | 7–6 2–6 7–6 |
| November 3, 2002 | Nottingham | Hard Indoors | Lilia Osterloh | 6–2 6–2 |
| May 14, 2006 | Jounieh | Clay | Anastasiya Yakimova | 6–4 7–5 |
| May 13, 2007 | Jounieh | Clay | Mariya Koryttseva | 6–2 4–6 7–6 |
Question:
What surface was used on may 13, 2007?
Answer:
Clay