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What type of machine did Leonardo da Vinci design in the form of a mechanical humanoid knight?
Answer
Humanoid robot
What type of military vehicle did Leonardo da Vinci design as a covered, circular fighting machine powered by crews?
Answer
Armored tank
What mechanical device did Leonardo da Vinci study as an early solution for reducing friction between moving parts?
Answer
Ball bearing
What vehicle did Leonardo da Vinci design that could move itself using springs and was demonstrated in modern reconstruction?
Answer
Self-propelled cart
What flying device did Leonardo da Vinci design with a large conical canopy?
Answer
Parachute
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What was the name of J.R.R. Tolkien’s first published Middle-earth story after The Hobbit?
Answer
The Lord of the Rings