[{'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: 7.3 Where Baidu does not exercise or execute any right or provision under the Agreement, such act or non-act shall not constitute a waiver of any such right."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]