Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
by using the tripadvisor websites , you represent and warrant that you are not located in , under the control of , or a national or resident of any such country or on any such list . 

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