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:
| Tournament | Surface | Week | Winner and score | Finalist | Semifinalists |
| --- | --- | --- | --- | --- | --- |
| Indian Wells | Hard | March 1 | Jim Courier 6–3, 6–3, 6–1 | Wayne Ferreira | Michael Chang Alexander Volkov |
| Key Biscane | Hard | March 8 | Pete Sampras 6–3, 6–2 | MaliVai Washington | Marcos Ondruska Petr Korda |
| Monte Carlo | Clay | April 19 | Sergi Bruguera 7–6(2), 6–0 | Cédric Pioline | Stefan Edberg Thomas Muster |
| Hamburg | Clay | May 3 | Michael Stich 6–3, 6–7(1), 7–6(7), 6–4 | Andrei Chesnokov | Emilio Sánchez Bernd Karbacher |
| Rome | Clay | May 10 | Jim Courier 6–1, 6–2, 6–2 | Goran Ivanišević | Pete Sampras Michael Chang |
| Montreal | Hard | July 26 | Mikael Pernfors 2–6, 6–2, 7–5 | Todd Martin | Richey Reneberg Petr Korda |
| Cincinnati | Hard | August 9 | Michael Chang 7–5, 0–6, 6–4 | Stefan Edberg | Pete Sampras Andre Agassi |
| Stockholm | Carpet (i) | October 25 | Michael Stich 4–6, 7–6(6), 7–6(3), 6–2 | Goran Ivanišević | MaliVai Washington Marc Rosset |
| Paris | Carpet (i) | November 1 | Goran Ivanišević 6–4, 6–2, 7–6(2) | Andriy Medvedev | Stefan Edberg Arnaud Boetsch |
Question:
Which Surface has a Semifinalist of stefan edberg thomas muster?
Answer:
Clay