Original sentence: " The episode was essentially designed to set up the premise for the spin-off series Maude.Marcia Rodd, the actress who played Carol in the episode, was replaced by Adrienne Barbeau in Maude.The show lasted for six seasons and 141 episodes before being cancelled in April 1978
Edited sentence: " The episode was essentially designed to set up the premise for the spin-off series that would air later in the year.Marcia Rodd, the actress who played Carol in the episode, would be replaced by Adrienne Barbeau in Maude.The show lasted for six seasons and 141 episodes before being cancelled airing its final episode on April 22, 1978