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: mighty ships
Table Content:
| no in series | no in season | title | vessel type | vessel operator | narrated by | original air date |
| --- | --- | --- | --- | --- | --- | --- |
| 5 | 1 | mv resolution | turbine installation vessel | mpi offshore ltd | barbara budd | 2009 |
| 6 | 2 | mv peace in africa | dredger | de beers | barbara budd | 2009 |
| 7 | 3 | akamalik | fishing trawler | royal greenland | barbara budd | 2009 |
| 8 | 4 | ccgs henry larsen | icebreaker | canadian coast guard | barbara budd | 2009 |
| 9 | 5 | uss nimitz | supercarrier | us navy | barbara budd | 2009 |
| 10 | 6 | hdms absalon | flexible support ship | royal danish navy | barbara budd | 2009 |
| 11 | 7 | mv fairplayer | heavy lift vessel | jumbo shipping | barbara budd | 2009 |
| 12 | 8 | tyco resolute | cable layer | tyco telecommunications | barbara budd | 2009 |


Statement
all the vessel type in the list be unique there be no duplicate


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