[{'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: Business Calendar uses Google AnalyticsÂ to collect anonymous usage data to improve the app and to understand how it is used. It is used in accordance to their privacy policy (http://www.google.com/intl/en/analytics/privacyoverview.html)."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]