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The I/O Kit framework evolved from NeXTSTEP 's DriverKit , operating system that later became Mac OS X , and shared no similarities with either Mac OS 9 's device driver framework , or that of BSD .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None