[{'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: Modifications We may revise these Terms from time to time to better reflect: (a) changes to the law, (b) new regulatory requirements, or (c) improvements or enhancements made to our Services."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]