user
Instruction
This is a table fact verification task. The goal of this task is to distinguish whether the given statement is entailed or refuted by the given table.


Table
Table Title: football at the 2012 summer olympics
Table Content:
| rank | nation | gold | silver | bronze | total |
| --- | --- | --- | --- | --- | --- |
| 1 | mexico | 1 | 0 | 0 | 1 |
| 1 | united states | 1 | 0 | 0 | 1 |
| 3 | brazil | 0 | 1 | 0 | 1 |
| 3 | japan | 0 | 1 | 0 | 1 |
| 5 | canada | 0 | 0 | 1 | 1 |
| 5 | south korea | 0 | 0 | 1 | 1 |
| total | total | 2 | 2 | 2 | 6 |


Statement
north america account for half of the medal win at the 2012 game in football


Answer Format
The final answer should be either "entailed" or "refuted" and use the following format:
```json
{
    "answer": "entailed" or "refuted"
}
```
rule
["entailed"]