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 . 

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