Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
all rights not expressly granted to you are reserved to crowdtangle and its licensors . 

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