Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
however , if such a child wins , notification will be sent to the parent or guardian 's e-mail address ( provided by the child when he/she enters the contest ) . 

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