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Lofgren graduated from UC Berkeley in May 1938 , and got a summer job working on E. O. Lawrence 's new 37-inch cyclotron completed in 1937 , at a salary of about $ 0.50 an hour .
 Lofgren, E. O. Lawrence
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Lofgren, E. O. Lawrence