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Digital nervous system is a phrase , popularly associated with Bill Gates of Microsoft , used to describe a vision for how the IT infrastructure of an enterprise could be analogous to the autonomic nervous system of a biological organism .
 Bill Gates, Microsoft
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bill Gates, Microsoft