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Instead , the secretaries , Harrie Massey ( physicist ) and Bernard Katz ( physiologist ) , were each assigned a group of Fellows to act as Associate Editors for each series ( " A " and " B " ) of the " Transactions " .
 Harrie Massey, Bernard Katz
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Harrie Massey, Bernard Katz