Conversation so far:
who wrote baby you're a rich man
Baby, you're a rich man was written by Lennon–McCartney
when was the release of baby you're a rich man
Baby you're a rich man was released on 7 July 1967
what's the length of baby you're a rich man
The length of baby, you're a rich man is 3 minutes and 3 seconds

Question: who produced the song
Self-contained rewrite: who produced baby you're a rich man