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