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What ship-propulsion device did Leonardo da Vinci sketch using paddle wheels instead of oars?
Answer
Paddle wheel
What wing-flapping aircraft did Leonardo da Vinci study as a possible form of human flight?
Answer
Ornithopter
What military vehicle did Leonardo da Vinci design with sloped armor and room for soldiers inside?
Answer
Armored tank
What watercraft safety feature did Leonardo da Vinci sketch as a boat with two separate hulls?
Answer
Double hull
What transport machine did Leonardo da Vinci design to move without horses, using a spring-powered mechanism?
Answer
Self-propelled cart
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In which harbor does Sydney's major New Year's Eve fireworks display take place?
Answer
Sydney Harbour