[{'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: Changes to This Privacy Policy We may amend this Privacy Policy from time to time, using the process for modifications set forth in our Terms of Service. Use of information we collect is subject to the Privacy Policy in effect at the time such information is collected."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]