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 | Opponent | Score |
| --- | --- | --- | --- | --- | --- |
| Winner | 6 November 2005 | Pune | Hard | Isha Lakhani | 6-4 6-1 |
| Runner–up | 12 March 2006 | Sunderland | Hard | Gaëlle Widmer | 1-6 6-3 1-6 |
| Winner | 18 March 2007 | Orange | Hard | Karin Knapp | 6-1 6-1 |
| Winner | 3 May 2010 | Brescia | Clay | Andrea Hlaváčková | 6-2 6-4 |
| Runner–up | 14 September 2010 | Darwin | Hard | Olivia Rogowska | 2-6 6-2 0-6 |
Question:
What kind of surface was the Tournament at Sunderland played on?
Answer:
Hard