[{'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: 3. Limited Warranty Super Cleaner does not represent or warrant that the products will be operated uninterruptedly or error-free. Especially in the case are as follows: (1) Taking the alteration or modification to the product without the prior written approval of Super Cleaner."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]