user
Instruction
Answer the question based on the provided table.


Table
Table Title: 1970 Summer Universiade
Table Content:
| Rank | Nation | Gold | Silver | Bronze | Total |
| --- | --- | --- | --- | --- | --- |
| 1 | Soviet Union | 26 | 17 | 15 | 58 |
| 2 | United States | 22 | 18 | 11 | 51 |
| 3 | East Germany | 8 | 3 | 4 | 15 |
| 4 | Italy | 4 | 4 | 6 | 14 |
| 5 | Japan | 3 | 7 | 5 | 15 |
| 6 | Hungary | 3 | 6 | 6 | 15 |
| 7 | West Germany | 3 | 6 | 4 | 13 |
| 8 | United Kingdom | 3 | 4 | 7 | 14 |
| 9 | Poland | 3 | 1 | 5 | 9 |
| 10 | Yugoslavia | 3 | 1 | 1 | 5 |
| 11 | Netherlands | 1 | 1 | 2 | 4 |
| 12 | Austria | 1 | 1 | 1 | 3 |
| 12 | Bulgaria | 1 | 1 | 1 | 3 |
| 14 | France | 1 | 0 | 4 | 5 |
| 15 | Romania | 0 | 4 | 2 | 6 |
| 16 | Cuba | 0 | 2 | 2 | 4 |
| 17 | Australia | 0 | 1 | 0 | 1 |
| 17 | Czechoslovakia | 0 | 1 | 0 | 1 |
| 17 | Greece | 0 | 1 | 0 | 1 |
| 17 | Sweden | 0 | 1 | 0 | 1 |
| 21 | Canada | 0 | 0 | 1 | 1 |
| 21 | South Korea | 0 | 0 | 1 | 1 |
| 21 | Madagascar | 0 | 0 | 1 | 1 |
| 21 | Panama | 0 | 0 | 1 | 1 |
| Total | Total | 82 | 80 | 80 | 242 |


Question
what is the difference between the number of medals the first ranked team had and the number of medals the 21st ranked teams had?


Answer Format
The final answer should be concise and use the following format:
```json
{
    "answer": [
        "answer1",
        "answer2",
        ...
    ]
}
```
rule
["57"]