In this task, you are given a question. You have to answer the question based on your information.

[Q]: Who was the youngest son of Erik Thorvaldsson?
[A]: Thorstein Eiriksson


[Q]: When does the seventeenth episode of "The Simpsons"' twenty-first season which was renewed for by Fox aired?
[A]: April 11, 2010


[Q]: Who was the song writer of the song in the album Raga Rock sung by the English rock band the Beatles?
[A]:
John Lennon and Paul McCartney