[{'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: How do we make changes to this policy? We may change this policy from time to time, and if we do we'll post any changes on this page. If you continue to use Pinterest after those changes are in effect, you agree to the revised policy. If the changes are significant, we may provide more prominent notice or get your consent as required by law."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]