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: none
Table Content:
| date | pilot | weapon systems officer | aircraft | tail code | call sign | kill |
| --- | --- | --- | --- | --- | --- | --- |
| may 10 | capt richard s ritchie | capt charles b debellevue | f - 4d 66 - 7463 | oy | oyster 03 | mig - 21 |
| july 8 | capt rs ritchie | capt cb debellevue | f - 4e 67 - 0362 | ed | paula 01 | mig - 21 |
| august 28 | capt rs ritchie | capt cb debellevue | f - 4d 66 - 7463 | oy | buick 01 | mig - 21 |
| september 9 | capt john a madden , jr | capt cb debellevue | f - 4d 66 - 0267 | oy | olds 01 | mig - 19 |
| september 9 | capt ja madden , jr | capt cb debellevue | f - 4d 66 - 0267 | oy | olds 01 | mig - 19 |


Statement
oy be the tail code that belong to weapon system officer capt charles b debellevue with call sign paula 01


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