What American actor who appeared on the twelfth episode of The Simpsons fourth season was "The Princess Guide" dedicated to?
The Princess Guide: "The Princess Guide" is the fifteenth episode of the twenty-sixth season of the American animated sitcom "The Simpsons", and the 567th overall episode of the series. The Princess Guide:  It originally aired on the Fox network in the United States on March 1, 2015. The Princess Guide:  The episode was dedicated to the memory of Leonard Nimoy, who died two days before the episode aired.
i don't know