user
Instruction
Answer the question based on the provided table.


Table
Table Title: List of Kentucky Derby broadcasters
Table Content:
| Year | Network | Race caller | Color commentator | Reporters | Trophy Presentation |
| --- | --- | --- | --- | --- | --- |
| 1959 | CBS | Fred Capossela | Bryan Field and Chris Schenkel |  | Chris Schenkel |
| 1958 | CBS | Fred Capossela | Bryan Field |  |  |
| 1957 | CBS | Fred Capossela | Bryan Field |  |  |
| 1956 | CBS | Fred Capossela | Bryan Field |  |  |
| 1955 | CBS | Fred Capossela | Phil Sutterfield and Win Elliot |  |  |
| 1954 | CBS | Bryan Field | Mel Allen |  | Bill Corum |
| 1953 | CBS | Bryan Field | Mel Allen | Phil Sutterfield | Phil Sutterfield |
| 1952 | CBS | Bryan Field | Sam Renick |  |  |


Question
how many races in the 1950s were not called by bryan field?


Answer Format
The final answer should be concise and use the following format:
```json
{
    "answer": [
        "answer1",
        "answer2",
        ...
    ]
}
```
rule
["5"]