Conversation so far:
what was the mirror challenge with Harry Houdini?
In 1904, the London Daily Mirror newspaper challenged Harry Houdini to escape from special handcuffs that it claimed had taken Nathaniel Hart, a locksmith from Birmingham, five years to make.

Question: How long did it take houdini to escape from it?
Self-contained rewrite: How long did it take houdini to escape from the special handcuffs that it claimed had taken Nathaniel Hart, a locksmith from Birmingham, five years to make in the mirror challenge?