[{'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 Cable Act allows a provider to use its cable system to collect personally identifiable information necessary to render a cable service or other services provided to subscribers and to detect and prevent unauthorized access to services. Additional personally identifiable information may be collected with the subscriber's prior consent. Personally identifiable information may be used or disclosed without the subscriber's consent where necessary to render services, and to conduct legitimate business activities related to services provided."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]