Question: When did ernie first appear on my three sons?

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question: In what episode number did ernie first appear on my three sons?
short_answers: 118
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question: On what date did ernie first appear on my three sons?
short_answers: October 31, 1963
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question: In what season did ernie first appear on my three sons?
short_answers: Season 4
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question: When did Ernie first appear on my three sons (episode number)?
short_answers: 118
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question: When did Ernie first appear on my three sons (date)?
short_answers: November 7, 1963
1963
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question: When did Ernie first appear on my three sons (season)?
short_answers: Season 4

Answer: Ernie first appeared on the sitcom My Three Sons in Episode 118 of the series, which was during Season 4, on October 31, 1963. Ernie Douglas was played by American television and film actor Barry Livingston.