Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
crowdtangle reserves all rights not expressly granted herein in the services or the content . 

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