[{'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: Our Do Not Track Policy: Some browsers have a "do not track" feature that lets you tell websites that you do not want to have your online activities tracked. At this time, we do not respond to browser "do not track" signals, but we do provide you the option to opt out of interest based advertising. To learn more about IBA or to opt-out of this type of advertising, visit the Network Advertising Initiative website and the Digital Advertising Alliance website. Options you select are browser and device-specific.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]