Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you agree that some experiences , events or other host services may carry inherent risk , and by participating in those host services , you choose to assume those risks voluntarily . 

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