Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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10.2 ratings and reviews by guests and hosts must be fair , truthful and factual and may not contain any offensive or defamatory language . 

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