Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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you may be entitled to seek an award of attorney fees and expenses if you prevail in arbitration , to the extent provided under applicable law and the aaa rules . 

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