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: prr locomotive classification
Table Content:
| prr class | builders model | build date | total produced | wheel arrangement | service | power output |
| --- | --- | --- | --- | --- | --- | --- |
| gs4 | 44 ton | 1948 - 1950 | 46 | b - b | switcher | nan |
| gf25 | u25b | 1965 | 59 | b - b | freight | nan |
| gf25a | u25c | 1965 | 20 | c - c | freight | nan |
| gf28a | u28c | 1966 | 15 | c - c | freight | nan |
| gf30a | u30c | 1967 | 5 | c - c | freight | nan |


Statement
less than 15 product separate the gf25a prr class from the gf30a prr class


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