[{'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: You can opt out of receiving our marketing emails. To stop receiving our promotional emails, follow the instructions in any promotional message you get from us. Don't worry - even if you opt out of getting marketing messages, we will still send you transactional messages. These include responses to your questions or information about your account."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]