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: schoolhouse rock!
Table Content:
| episode title | subject | music by | performed by | first aired |
| --- | --- | --- | --- | --- |
| the body machine | nutrition and digestive system | lynn ahrens | bob dorough and jack sheldon | 1979 |
| electricity , electricity | electricity | bob dorough | zachary sanders | 1979 |
| the energy blues | energy conservation | george newall | jack sheldon | 1978 |
| interplanet janet | the solar system | lynn ahrens | lynn ahrens | 1978 |
| telegraph line | nervous system | lynn ahrens | jaime aff and christine langner | 1979 |
| them not - so - dry bones | skeletal system | george newall | jack sheldon | 1979 |
| a victim of gravity | gravity | lynn ahrens | the tokens | 1978 |


Statement
zachary sander first perform in 1979


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