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: attack squadron 163 (united states navy)
Table Content:
| from | aircraft | carrier | air wing | tail code | area |
| --- | --- | --- | --- | --- | --- |
| 7 june 1962 | a4d - 2 | cva - 34 | cvg - 16 | ah - 3xx | westpac |
| 1 august 1963 | a - 4b | cva - 34 | cvw - 16 | ah - 3xx | westpac |
| 5 april 1965 | a - 4e | cva - 34 | cvw - 16 | ah - 3xx | vietnam war |
| 26 may 1966 | a - 4e | cva - 34 | cvw - 16 | ah - 3xx | vietnam war |
| 16 june 1967 | a - 4e | cva - 34 | cvw - 16 | ah - 3xx | vietnam war |
| 18 july 1968 | a - 4e | cva - 19 | cvw - 21 | np - 3xx | vietnam war |


Statement
when the from be 18 july 1968 the area be vietnam war and when the from be 7 june 1962 the area be westpac


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