[{'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: PERIOD OF USE OF YOUR PERSONAL INFORMATION We will generally only retain your Personal Information for so long as is necessary to fulfil the purposes for which it was collected, as set out under the "How We Use Your Information" section above. However, in the following circumstances, we may be required to retain, preserve or disclose your Personal Information for a longer period of time: in order to comply with applicable laws or regulations; in order to comply with a court order, subpoena or other legal process; in response to a request by a government authority, law enforcement agency or similar body (whether situated in your jurisdiction or elsewhere); where we believe it is reasonably necessary to comply with applicable laws or regulations; or in order to enforce the WeChat Terms of Service or this Privacy Policy, protect our rights, property or safety, or the rights, property or safety of our affiliate companies or other users of WeChat.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]