[{'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: Contact We may revise our privacy policy from time to time. When we do, those changes will be reflected in this privacy policy. Any changes that we make will always be made with your privacy and satisfaction as top priorities. We encourage you to review our privacy policy whenever you visit the ELEX web site."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]