[{'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 addition, Big Duck may also offer you the opportunity to "opt in" to receive additional email communications, including Big Duck News Releases related to all the latest-breaking news, the launch of new Big Duck games, and announcements of all new Big Duck Games options and features.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]