[{'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: We do not sell your data to advertisers; We do not allow advertisers to collect personal information from customers while they are using our website or products."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]