[{'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: Advertising Preferences. We try to show you ads that we think will be relevant to your interests. If you would like to modify the information we and our advertising partners use to select these ads, go here to learn about the choices available to you."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]