[{'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: Opting Out of Marketing You may opt-out of receiving promotional emails from us by following the instructions in those emails by emailing us at legal-requests@supercell.com. If you opt-out, we may still send you non-promotional emails, such as emails about your accounts or our ongoing business relations."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]