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Practical AC motor designs including induction motors were independently invented by Galileo Ferraris and Nikola Tesla and further developed into a practical three-phase form by Mikhail Dolivo-Dobrovolsky and Charles Eugene Lancelot Brown .
 Galileo Ferraris, Nikola Tesla, Mikhail Dolivo-Dobrovolsky, Charles Eugene Lancelot Brown
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Galileo Ferraris, Nikola Tesla, Mikhail Dolivo-Dobrovolsky, Charles Eugene Lancelot Brown