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: 1992 australian grand prix
Table Content:
| driver | constructor | laps | time / retired | grid |
| --- | --- | --- | --- | --- |
| gerhard berger | mclaren - honda | 81 | 1:46:54.786 | 4 |
| michael schumacher | benetton - ford | 81 | + 0.741 | 5 |
| martin brundle | benetton - ford | 81 | + 54.156 | 8 |
| jean alesi | ferrari | 80 | + 1 lap | 6 |
| thierry boutsen | ligier - renault | 80 | + 1 lap | 22 |
| stefano modena | jordan - yamaha | 80 | + 1 lap | 15 |
| mika häkkinen | lotus - ford | 80 | + 1 lap | 10 |
| aguri suzuki | footwork - mugen - honda | 79 | + 2 laps | 18 |
| christian fittipaldi | minardi - lamborghini | 79 | + 2 laps | 17 |
| gianni morbidelli | minardi - lamborghini | 79 | + 2 laps | 16 |
| nicola larini | ferrari | 79 | + 2 laps | 19 |
| jan lammers | march - ilmor | 78 | + 3 laps | 25 |
| johnny herbert | lotus - ford | 77 | + 4 laps | 12 |
| jj lehto | dallara - ferrari | 70 | gearbox | 24 |
| emanuele naspetti | march - ilmor | 55 | gearbox | 23 |
| bertrand gachot | larrousse - lamborghini | 51 | fuel system | 21 |
| riccardo patrese | williams - renault | 50 | engine | 3 |
| ukyo katayama | larrousse - lamborghini | 35 | differential | 26 |
| andrea de cesaris | tyrrell - ilmor | 29 | engine | 7 |
| nigel mansell | williams - renault | 18 | collision | 1 |
| ayrton senna | mclaren - honda | 18 | collision | 2 |
| maurício gugelmin | jordan - yamaha | 7 | spun off | 20 |
| érik comas | ligier - renault | 4 | engine | 9 |
| michele alboreto | footwork - mugen - honda | 0 | engine | 11 |
| pierluigi martini | dallara - ferrari | 0 | accident | 14 |
| olivier grouillard | tyrrell - ilmor | 0 | accident | 13 |


Statement
nigel mansell and ayrton senna be 2 of the driver that have engine problem


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