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: mitsuo itoh
Table Content:
| year | class | team | points | wins |
| --- | --- | --- | --- | --- |
| 1961 | 125cc | suzuki | 0 | 0 |
| 1961 | 250cc | suzuki | 0 | 0 |
| 1962 | 50cc | suzuki | 23 | 0 |
| 1962 | 125cc | suzuki | 4 | 0 |
| 1963 | 50cc | suzuki | 20 | 1 |
| 1963 | 125cc | suzuki | 1 | 0 |
| 1964 | 50cc | suzuki | 19 | 0 |
| 1964 | 125cc | suzuki | 6 | 0 |
| 1965 | 50cc | suzuki | 16 | 0 |
| 1966 | 50cc | suzuki | 3 | 0 |
| 1966 | 125cc | suzuki | 4 | 0 |
| 1967 | 50cc | suzuki | 8 | 1 |


Statement
exactly half of mitsuo itoh 's competition have be in the 50cc


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