[{'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: In certain exceptional circumstances, we may not be able to provide access to certain personal information we hold. For security purposes, not all personal information is accessible and amendable by the Privacy Officer. If access or corrections cannot be provided, we will notify the individual making the request within 30 days, in writing, of the reasons for the refusal. Data retention We keep your information only as long as we need it for legitimate business purposes and as permitted by applicable legal requirements. If you close your account, we will retain certain data for analytical purposes and recordkeeping integrity, as well as to prevent fraud, enforce our Terms of Use ake actions we deem necessary to protect the integrity of our Service or our users, or take other actions otherwise permitted by law. In addition, if certain information has already been provided to third parties as described in this Privacy Policy, retention of that information will be subject to those third parties' policies."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]