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What mechanical bearing principle did Leonardo da Vinci sketch using rolling balls?
Answer
Ball bearing
What rotating weapon did Leonardo da Vinci design with multiple small guns?
Answer
Organ gun
What bowed-string keyboard instrument did Leonardo da Vinci invent?
Answer
Viola organista
What self-moving vehicle did Leonardo da Vinci design without pedals or horses?
Answer
Self-propelled cart
What armored fighting vehicle did Leonardo da Vinci design with a conical cover and multiple guns?
Answer
Armored tank
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What bowed-string keyboard instrument did Leonardo da Vinci invent?
Answer
Viola organista
What self-moving vehicle did Leonardo da Vinci design without pedals or horses?
Answer
Self-propelled cart
Which Tolkien book was published posthumously in 1980 from unfinished Middle-earth writings?
Answer
Unfinished Tales
What was the name of J.R.R. Tolkien’s Oxford professorship from 1945 to 1959?
Answer
Rawlinson and Bosworth Professor of Anglo-Saxon
Which fictional city does J.R.R. Tolkien describe as the capital of Gondor?
Answer
Minas Tirith