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