Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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the arbitrator may only conduct an individual arbitration , may not consolidate more than one person 's claims and may not preside over any form of representative or class proceeding , or any proceeding on behalf of or involving more than one person or persons . 

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