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During a research trip, Lisa learns that Sideshow Bob is the chief scientist at a big chemical engineering company; Marge tries to teach a teen church group about healthy sexual practices.
First Air Date : Dec 17, 1989
Last Air date : Apr 21, 2024
Episode : 769 Episode
Season : 36 Season
Runtime: 22:14 minutes
Studio: FOX
Country: United States of America