Which singer had a hit with the song "Hand on Your Heart" in 1989?

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Who played Leon, Roseanne's boss at the café, on the sitcom "Roseanne"?

Who portrayed Michael Corleone's second wife in "The Godfather"?

What three actresses were the original Charlie's Angels?

What group was Ringo Starr with before the Beatles?

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What was the name of the plane that dropped the atomic bomb on Nagasaki?

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Petrology the study of what?