[{'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: We may revise these Terms from time to time, the most current version will be at https://support.twitter.com/articles/20175155. We will try to notify you of material revisions, for example via the Service or an update to the website. If you do not wish to be bound by any such revisions to the Terms, you must end these Terms with us as set forth in Section 6 above. By continuing to access or use the Service after those revisions become effective, you agree to be bound by the revised Terms."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]