[{'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: Many third-party advertisers and some Web browsers and mobile devices allow you to opt out of third-party advertising. To learn more about interest-based advertising or to opt out of some types of interest-based advertising for participating ad networks, you can visit the Network Advertising Initiative (http://www.networkadvertising.org/choices/), the Digital Advertising Alliance (http://www.aboutads.info/choices/), or for users in the EU, the European Interactive Digital Advertising Alliance's Consumer Choice Page (http://www.youronlinechoices.eu). You may also opt out of tracking and receiving interest-based advertisements on your mobile device by some mobile advertising companies and other similar entities by downloading the App Choices app at http://www.aboutads.com/info/appchoices."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]