[{'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 be aware that despite our efforts, no data security measures can guarantee 100% security at all times. Our systems and the communications networks through which you access Our Service may be subject to security breaches and failures which are due to circumstances beyond our reasonable control."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]