[{'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: Please consider carefully what you post and communicate through WeChat. In some instances, you may control what access the wider public has to your Shared Information via the privacy settings in some of WeChat."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]