Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you understand that crowdtangle 's service is built on api 's provided by third-party services , including facebook , twitter , instagram and others , and from time-to-time , there are adverse events with respect to those apis that are no fault of crowdtangle 's . 

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