[{'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: Policy Updates This policy may change from time to time, but if it does, we will post any changes up on this page. If there are any significant changes, we will provide a more prominent notice on our site."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]