Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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( b ) you acknowledge and agree that certain materials on or in the products are the property of third party licensors and , without prejudice to any and all other rights and remedies available , each such licensor has the right to directly enforce relevant provisions of section 12 against you . 

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