[{'role': 'user', 'content': "Analyze the following clause from a privacy policy and determine if it's fair or unfair. Also identify any privacy practices mentioned: Certain Verizon vendors may place and read cookies on our sites to help us deliver Verizon marketing messages on our sites and on non-Verizon sites. We require that these vendors provide consumers with the ability to opt out of their use of information for these purposes. In accordance with industry self-regulatory principles, you should see this icon in"}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Identifier_Cookie_or_similar_Tech_3rdParty.'}]