[{'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: From time to time we may change our privacy policies. We will notify you of any material changes to our Policy as required by law. We will also post an updated copy on our platform. Please check our platform periodically for updates."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]