Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
in many cities , hosts may have to register , get a permit or obtain a license before preparing food or serving alcohol for sale . 

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