[{'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: 3.CHANGES TO TERMS AND OUR SERVICES We may make changes to these Terms over time, so please come back and review them."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]