199591
Additional directing credits include multiple episodes of Leave It to Beaver , The Andy Griffith Show , The Farmer 's Daughter , My Three Sons , F Troop , Hogan 's Heroes , Room 222 , and Many Happy Returns .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None