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Which ancient city in Jordan is famous for buildings carved into rose-coloured rock?
Answer
Petra
Which river flows through London and empties into the North Sea?
Answer
River Thames
What keyboard instrument did Leonardo da Vinci design to produce bowed-string sounds?
Answer
Viola organista
What shipbuilding feature did Leonardo da Vinci sketch to help protect a vessel from flooding?
Answer
Double hull
Which Leonardo da Vinci design was an underwater diving suit with a breathing mask and tubes?
Answer
Diving suit
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Which river flows through London and empties into the North Sea?
Answer
River Thames
What keyboard instrument did Leonardo da Vinci design to produce bowed-string sounds?
Answer
Viola organista
What type of bearing did Leonardo da Vinci sketch using freely moving balls?
Answer
Ball bearing
What humanoid machine did Leonardo da Vinci design for a 1495 Milanese court pageant?
Answer
Mechanical knight