162778
According to legend , John Beltz and his staff led Oldsmobile through undoubtedly its best years and the Oldsmobiles from 1949 to 72 define Olds as the Rocket division of GM .
 Beltz
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Beltz