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 | Year | Championship | Surface | Partner | Opponents in the final | Score in the final |
| --- | --- | --- | --- | --- | --- | --- |
| Winner | 1972.0 | French Open | Clay | Billie Jean King | Winnie Shaw Nell Truman | 6–1, 6–2 |
| Winner | 1972.0 | Wimbledon | Grass | Billie Jean King | Françoise Dürr Judy Tegart Dalton | 6–2, 4–6, 6–3 |
| Winner | 1972.0 | US Open | Grass | Françoise Dürr | Margaret Court Virginia Wade | 6–3, 1–6, 6–3 |
| Runner-up | 1973.0 | French Open | Clay | Françoise Dürr | Margaret Court Virginia Wade | 6–2, 6–3 |
| Runner-up | 1973.0 | Wimbledon | Grass | Françoise Dürr | Rosie Casals Billie Jean King | 6–1, 4–6, 7–5 |
| Runner-up | 1974.0 | US Open | Grass | Françoise Dürr | Rosie Casals Billie Jean King | 7–6, 6–7, 6–4 |
| Runner-up | 1975.0 | Wimbledon | Grass | Françoise Dürr | Ann Kiyomura Kazuko Sawamatsu | 7–5, 1–6, 7–5 |
| Runner-up | 1976.0 | Wimbledon | Grass | Billie Jean King | Chris Evert Martina Navratilova | 6–1, 3–6, 7–5 |
| Runner-up | 1977.0 | Wimbledon | Grass | Martina Navratilova | Helen Gourlay JoAnne Russell | 6–3, 6–3 |
| Winner | 1977.0 | US Open (2) | Clay | Martina Navratilova | Renée Richards Betty-Ann Stuart | 6–1, 7–6 |
| Winner | 1979.0 | French Open (2) | Clay | Wendy Turnbull | Françoise Dürr Virginia Wade | 3–6, 7–5, 6–4 |
| Runner-up | 1979.0 | Wimbledon | Grass | Wendy Turnbull | Billie Jean King Martina Navratilova | 5–7, 6–3, 6–2 |
| Winner | 1979.0 | US Open (3) | Hard | Wendy Turnbull | Billie Jean King Martina Navratilova | 6–4, 6–3 |
Question:
Who was Betty's partner when the surface is hard?
Answer:
Wendy Turnbull