23337
The federal government prohibited discrimination in defense work , but when in June 1943 Packard promoted three black people to work next to whites on its assembly lines , 25,000 white workers walked off the job .
 Packard
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Packard