Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
all trademarks , service marks , logos , trade names , and any other source identifiers of airbnb used on or in connection with the airbnb platform and airbnb content are trademarks or registered trademarks of airbnb in the united states and abroad . 

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