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: doppler spectroscopy
Table Content:
| planet | planet type | semimajor axis ( au ) | orbital period | radial velocity (m / s) | detectable by : |
| --- | --- | --- | --- | --- | --- |
| 51 pegasi b | hot jupiter | 0.05 | 4.23 days | 55.9 | first - generation spectrograph |
| 55 cancri d | gas giant | 5.77 | 14.29 years | 45.2 | first - generation spectrograph |
| jupiter | gas giant | 5.2 | 11.86 years | 12.4 | first - generation spectrograph |
| gliese 581c | super - earth | 0.07 | 12.92 days | 3.18 | second - generation spectrograph |
| saturn | gas giant | 9.58 | 29.46 years | 2.75 | second - generation spectrograph |
| alpha centauri bb | terrestrial planet | 0.04 | 3.23 days | 0.51 | second - generation spectrograph |
| neptune | ice giant | 30.1 | 164.79 years | 0.281 | third - generation spectrograph |
| earth | habitable planet | 1.0 | 365.26 days | 0.089 | third - generation spectrograph (likely) |
| pluto | dwarf planet | 39.26 | 246.04 years | 3e-05 | not detectable |


Statement
earth be the planet with the longest orbital period


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