[{'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: Information used for online advertising You have choices about whether certain information collected on websites, including Verizon's, is used to customize advertising based on predictions generated from your visits over time and across different websites and apps. When you see this icon"}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]