Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
if we make changes , we will give a notification to you via email or by other appropriate means ; if you do not object to these changes within 4 weeks after they have been communicated to you , the changes will be deemed to be accepted ( the notification will inform you accordingly ) . 

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