Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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content or links to content that , in the sole judgment of tripadvisor , ( a ) violates the previous subsections herein , ( b ) is objectionable , ( c ) which restricts or inhibits any other person from using or enjoying the interactive areas or this website , or ( d ) which may expose tripadvisor or its affiliates or its users to any harm or liability of any type . 

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