[{'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: Please note that children can choose whether to share their information with us, but certain features cannot function without it. As a result, children may not be able to access certain features if required information has not been provided. We will not require a child to provide more information than is reasonably necessary in order to participate in an online activity."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]