Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
headspace ® , the headspace logo and all other headspace product or service marks are trademarks of headspace . 

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