[{'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 the Privacy Policy Kaufcom GmbH reserves the right, in its sole discretion, to change or modify this Privacy Policy at any time by posting the changed or modified version of the Privacy Policy on the Site. Any such changes or modifications will be effective immediately upon posting. If we make any changes to this Privacy Policy, we will change the Last Revised date above. Your continued use of Services will signify your acceptance of the changes to this Privacy Policy."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]