[{'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: Device Data. Cortana can access data about your device and how you use it. For instance, it can determine if Bluetooth is on, whether your lock screen in on, your alarm settings, and which apps you install and use."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]