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:
| Year | Nord | West | Südwest | Berlin |
| --- | --- | --- | --- | --- |
| 1946.0 | – | – | 1. FC Saarbrücken | SG Wilmersdorf |
| 1947.0 | – | – | 1. FC Kaiserslautern | SG Charlottenburg |
| 1948.0 | Hamburger SV | Borussia Dortmund | 1. FC Kaiserslautern | Union Oberschöneweide |
| 1949.0 | Hamburger SV | Borussia Dortmund | 1. FC Kaiserslautern | Berliner SV 92 |
| 1950.0 | Hamburger SV | Borussia Dortmund | 1. FC Kaiserslautern | Tennis Borussia Berlin |
| 1951.0 | Hamburger SV | FC Schalke 04 | 1. FC Kaiserslautern | Tennis Borussia Berlin |
| 1952.0 | Hamburger SV | Rot-Weiss Essen | 1. FC Saarbrücken | Tennis Borussia Berlin |
| 1953.0 | Hamburger SV | Borussia Dortmund | 1. FC Kaiserslautern | SC Union 06 Berlin |
| 1954.0 | Hannover 96 | 1. FC Köln | 1. FC Kaiserslautern | Berliner SV 92 |
| 1955.0 | Hamburger SV | Rot-Weiss Essen | 1. FC Kaiserslautern | BFC Viktoria 1889 |
| 1956.0 | Hamburger SV | Borussia Dortmund | 1. FC Kaiserslautern | BFC Viktoria 1889 |
| 1957.0 | Hamburger SV | Borussia Dortmund | 1. FC Kaiserslautern | Hertha BSC |
| 1958.0 | Hamburger SV | FC Schalke 04 | FK Pirmasens | Tennis Borussia Berlin |
| 1959.0 | Hamburger SV | Westfalia Herne | FK Pirmasens | SC Tasmania 1900 Berlin |
| 1960.0 | Hamburger SV | 1. FC Köln | FK Pirmasens | SC Tasmania 1900 Berlin |
| 1961.0 | Hamburger SV | 1. FC Köln | 1. FC Saarbrücken | Hertha BSC |
| 1962.0 | Hamburger SV | 1. FC Köln | Borussia Neunkirchen | SC Tasmania 1900 Berlin |
| 1963.0 | Hamburger SV | 1. FC Köln | 1. FC Kaiserslautern | Hertha BSC |
Question:
What is the earliest year borussia dortmund was west and bfc viktoria 1889 was Berlin?
Answer:
1956.0