[{'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: Changes to our Privacy Policy Our Privacy Policy may change from time to time, we will post any privacy policy changes on our website http://www.cmcm.com/ under our application page, so please review it periodically. We may provide you additional forms of notice of modifications or updates as appropriate under the circumstances."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]