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:
| Edition | Round | Date | Against | Surface | Opponent | W/L | Result |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 2007 Davis Cup Europe/Africa Group I | 1R | 9–11 February 2007 | Georgia | Carpet | George Khrikadze | Win | 6–3, 7–6 (7–5) |
| 2007 Davis Cup Europe/Africa Group I | GI PO | 21–23 September 2007 | Netherlands | Hard | Robin Haase | Loss | 1–6, 1–6, 6–2, 7–5, 2–6 |
| 2008 Davis Cup Europe/Africa Group II | 1R | 11–13 April 2008 | Tunisia | Clay | Walid Jallali | Loss | 5–7, 2–6 |
| 2008 Davis Cup Europe/Africa Group II | SF | 19–21 September 2008 | Ukraine | Hard | Sergiy Stakhovsky | Loss | 4–6, 6–7 (5–7) , 4–6 |
| 2012 Davis Cup Europe/Africa Group I | GI PO | 14–16 September 2012 | Slovakia | Hard | Martin Kližan | Loss | 6–3, 2–6, 6–7 (4–7) , 2–6 |
| 2013 Davis Cup Europe/Africa Group II | 2R | 5–7 April 2013 | Lithuania | Clay | Lukas Mugevicius | Win | 6-0, 6-1, 6-2 |
Question:
WHAT WAS THE SURFACE MADE OF WHEN THE OPPONENT WAS GEORGE KHRIKADZE?
Answer:
Carpet