[{'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: The collected persistent identifier is not shared with other third parties. However, we may, from time to time contract with certain third party service providers to provide support for the internal operations of the Service. Your personal information is not used or disclosed by these contracted third party service providers except for the limited service for which they have been contracted."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]