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