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 | Partner | Opponent in the final | Score in the final |
| --- | --- | --- | --- | --- | --- | --- |
| Winner | November 3, 2002 | ITF $10,000 Stockholm , Sweden | Hard | Elke Clijsters | Jenny Loow Suzanne van Hartingsveldt | 6-1 6-1 |
| Runner-up | May 16, 2004 | ITF $50,000 St. Gaudens , France | Clay | Natalia Gussoni | Ruxandra Dragomir-Ilie Andreea Vanc | 6–3, 6–1 |
| Winner | May 12, 2007 | ITF $100,000 Rome , Italy | Clay | Emma Laine | Maret Ani Caroline Maes | 1-0 ret. |
| Runner-up | Oct 26, 2009 | ITF $100,000 Poitiers , France | Hard | Michaella Krajicek | Julie Coin Marie-Eve Pelletier | 3-6, 6-3, [3-10] |
| Runner-up | February 4, 2011 | ITF $25,000 Sutton , Great Britain | Hard (i) | Darija Jurak | Emma Laine Melanie South | 3-6, 7-5 [8-10] |
| Runner-up | March 21, 2011 | ITF $25,000 Bath , Great Britain | Hard | Katarzyna Piter | Tímea Babos Anne Kremer | 7–6 (5) , 6–2 |
| Winner | June 13, 2011 | ITF $25,000 Istanbul , Turkey | Hard | Teodora Mirčić | Daniella Dominikovic Melis Sezer | 6–4, 6–2 |
| Runner-up | Jul 30, 2012 | ITF $50,000 Trnava , Slovak Republic | Clay | Sandra Klemenschits | Elena Bogdan Renata Voracova | 6-7, 4-6 |
| Winner | September 23, 2013 | ITF $25,000 Clermont-Ferrand , France | Hard | Michaella Krajicek | Margarita Gasparyan Alyona Sotnikova | 5–7, 6–4, [10–8] |
Question:
What surface has natalia gussoni as the partner?
Answer:
Clay