Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
essential contractual obligations are such duties of airbnb in whose proper fulfilment you regularly trust and must trust for the proper execution of the contract but the amount shall be limited to the typically occurring foreseeable damage . 

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