[{'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: Cognitive Services collect and use many types of data, such as images, audio files, video files, or text, all of which are retained by Microsoft. Microsoft has implemented business and technical measures designed to help de-identify some data Cognitive Services retain. De-identification will not anonymize data completely; for example, a person in a photograph could still be recognized by someone who knows that person."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]