Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you understand and agree that without a written license agreement with linden lab , we do not authorize you to make any use of the linden marks , including but not limited to `` linden , '' or `` linden lab '' . 

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