[{'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: Safety and Security. We verify accounts and activity, and promote safety and security on and off our Services, such as by investigating suspicious activity or violations of our Terms, and to ensure our Services are being used legally."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]