[{'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: Because the data used for interest-based advertising is also used for other necessary purposes (including providing our products, analytics and fraud detection), opting out of interest-based advertising does not stop that data from being collected. Nor does it mean you will stop getting ads or see fewer ads. However, if you do opt out, the ads you receive will no longer be interest-based and may be less relevant to your interests."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]