Which country is known as the "Land of the Rising Sun"?
Which animal is known as the "King of the Jungle"?
Who was the first man to walk on the moon?
What is the hardest natural substance on Earth?
What is the longest river in the world?
Who invented the telephone?
Which planet is closest to the Sun?
Which bird can fly backward?
What was the first artificial satellite launched into space?
Which musical instrument is this?
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