Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
in addition , both host and co-host acknowledge that their co-hosting relationship will terminate in the event that airbnb ( i ) terminates the co-host service or ( ii ) terminates either party 's participation in the co-host service . 

```
. OPTIONS: ['Content removal' 'Arbitration' 'Jurisdiction' 'Unilateral termination'
 'Limitation of liability' 'Choice of law' 'None' 'Contract by using'
 'Unilateral change'].