Use stream of consciousness to answer the following. Hey Jude is a song by the English rock band the Beatles, written by Paul McCartney and credited to Lennon -- McCartney. The ballad evolved from "Hey Jules", a song McCartney wrote to comfort John Lennon's son, Julian, during his parents' divorce. "Hey Jude" begins with a verse-bridge structure incorporating McCartney's vocal performance and piano accompaniment; further instrumentation is added as the song progresses. After the fourth verse, the song shifts to a fade-out coda that lasts for more than four minutes.\n\nAnswer this question: who was the song hey jude written for?
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To answer the above question, the relevant sentence is: The ballad evolved from "Hey Jules", a song McCartney wrote to comfort John Lennon's son, Julian, during his parents' divorce. Final answer: John Lennon 's son , Julian.
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