[{'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: 7. Advertisements and Promotional Offers Comcast, or third parties acting at Comcast's request, may deliver advertisements to you through the Comcast Web Services and other websites, depending on whether you are a registered user or not, as described in more detail below."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]