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: alberto pagani
Table Content:
| year | class | team | points | wins |
| --- | --- | --- | --- | --- |
| 1959 | 125cc | ducati | 2 | 0 |
| 1960 | 125cc | mv agusta | 0 | 0 |
| 1960 | 250cc | aermacchi | 2 | 0 |
| 1960 | 350cc | norton | 0 | 0 |
| 1960 | 500cc | norton | 0 | 0 |
| 1961 | 250cc | aermacchi | 0 | 0 |
| 1961 | 500cc | norton | 3 | 0 |
| 1962 | 125cc | honda | 2 | 0 |
| 1962 | 250cc | honda | 8 | 0 |
| 1963 | 50cc | kreidler | 9 | 0 |
| 1963 | 350cc | norton | 0 | 0 |
| 1964 | 250cc | paton | 6 | 0 |
| 1965 | 250cc | aermacchi | 1 | 0 |
| 1965 | 350cc | aermacchi | 0 | 0 |
| 1966 | 250cc | aermacchi | 4 | 0 |
| 1966 | 350cc | aermacchi | 11 | 0 |
| 1967 | 250cc | aermacchi | 0 | 0 |
| 1967 | 350cc | aermacchi | 11 | 0 |
| 1968 | 500cc | linto | 9 | 0 |
| 1969 | 350cc | aermacchi | 0 | 0 |
| 1969 | 500cc | linto | 15 | 1 |
| 1970 | 250cc | aermacchi | 4 | 0 |
| 1970 | 500cc | linto | 30 | 0 |
| 1971 | 125cc | derbi | 4 | 0 |
| 1971 | 250cc | suzuki | 0 | 0 |
| 1971 | 500cc | linto | 29 | 1 |
| 1971 | 500cc | mv agusta | 29 | 1 |
| 1972 | 350cc | mv agusta | 4 | 0 |
| 1972 | 500cc | mv agusta | 87 | 1 |


Statement
1971 be the only year alberto pagani win 2 time in the same year , in the 250cc class


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