[{'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: Push Notifications We send you push notifications from time-to-time in order to update you about any events or promotions that we may be running. If you no longer wish to receive these types of communications, you may turn them off at the device level. To ensure you receive proper notifications, we will need to collect certain information about your device such as operating system and user identification information."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]