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 | Championship | Surface | Opponent in the final | Score in the final |
| --- | --- | --- | --- | --- | --- |
| Runner-up | 30 August 1993 | Umag , Croatia | Clay | Thomas Muster | 5–7, 6–3, 3–6 |
| Runner-up | 11 October 1993 | Athens , Greece | Clay | Jordi Arrese | 4–6, 6–3, 3–6 |
| Winner | 8 November 1993 | São Paulo , Brazil | Clay | Sláva Doseděl | 6–4, 6–3 |
| Runner-up | 15 November 1993 | Buenos Aires , Argentina | Clay | Carlos Costa | 6–3, 1–6, 4–6 |
| Winner | 18 April 1994 | Nice , France | Clay | Jim Courier | 6–4, 6–2 |
| Runner-up | 23 May 1994 | Bologna , Italy | Clay | Javier Sánchez | 6–7 (3–7) , 6–4, 3–6 |
| Runner-up | 6 June 1994 | French Open , Paris, France | Clay | Sergi Bruguera | 3–6, 5–7, 6–2, 1–6 |
| Winner | 25 July 1994 | Stuttgart , Germany | Clay | Andrea Gaudenzi | 7–5, 6–3, 7–6 (7–5) |
| Winner | 29 August 1994 | Umag , Croatia | Clay | Karol Kučera | 6–2, 6–4 |
| Winner | 3 October 1994 | Palermo , Italy | Clay | Àlex Corretja | 2–6, 7–6 (8–6) , 6–4 |
| Winner | 10 October 1994 | Athens , Greece | Clay | Óscar Martínez | 4–6, 7–6 (7–4) , 6–3 |
| Winner | 31 October 1994 | Santiago , Chile | Clay | Francisco Clavet | 6–3, 6–4 |
| Winner | 7 November 1994 | Montevideo , Uruguay | Clay | Francisco Clavet | 6–4, 6–0 |
| Winner | 19 June 1995 | Porto , Portugal | Clay | Carlos Costa | 3–6, 6–3, 6–4 |
| Runner-up | 6 November 1995 | Montevideo , Uruguay | Clay | Bohdan Ulihrach | 2–6, 3–6 |
| Winner | 24 June 1996 | Bologna , Italy | Clay | Carlos Costa | 6–3, 6–4 |
| Winner | 29 July 1996 | Kitzbühel , Austria | Clay | Àlex Corretja | 6–2, 6–4, 6–4 |
| Winner | 16 September 1996 | Bucharest , Romania | Clay | Carlos Moyà | 6–1, 7–6 (7–5) |
| Runner-up | 15 September 1997 | Marbella , Spain | Clay | Albert Costa | 3–6, 2–6 |
| Winner | 6 October 1997 | Palermo, Italy | Clay | Dominik Hrbatý | 6–4, 6–2 |
| Winner | 13 April 1998 | Estoril , Portugal | Clay | Thomas Muster | 3–6, 6–1, 6–3 |
| Runner-up | 20 April 1998 | Barcelona , Spain | Clay | Todd Martin | 2–6, 6–1, 3–6, 2–6 |
| Runner-up | 11 October 1999 | Palermo , Italy | Clay | Arnaud di Pasquale | 1–6, 3–6 |
Question:
What is the surface of the palermo, italy championship?
Answer:
Clay, Clay, Clay