Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
unless the arbitrator determines that your claim was frivolous or filed for the purpose of harassment , airbnb agrees it will not seek , and hereby waives all rights it may have under applicable law or the aaa rules , to recover attorneys ' fees and expenses if it prevails in arbitration . 

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