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 | Finalist | Semifinalists |
| --- | --- | --- | --- | --- | --- |
| Boca Raton | Hard | March 2 | Steffi Graf 3–6, 6–2, 6–0 | Conchita Martínez | Mary Joe Fernandez Amanda Coetzer |
| Key Biscayne | Hard | March 9 | Arantxa Sánchez 6–1, 6–4 | Gabriela Sabatini | Jennifer Capriati Steffi Graf |
| Hilton Head | Clay | March 30 | Gabriela Sabatini 6–1, 6–4 | Conchita Martínez | Brenda Schultz-McCarthy Arantxa Sánchez |
| Rome | Clay | May 4 | Gabriela Sabatini 7–5, 6–4 | Monica Seles | Amanda Coetzer Mary Joe Fernandez |
| Berlin | Clay | May 11 | Steffi Graf 4–6, 7–5, 6–2 | Arantxa Sánchez | Jennifer Capriati Mary Joe Fernandez |
| Montreal | Hard | August 17 | Arantxa Sánchez 6–3, 4–6, 6–4 | Monica Seles | Lori McNeil Helena Suková |
Question:
What type of surface was played at the tournament in berlin?
Answer:
Clay