Nagoya is Japan's fourth-largest city and a major industrial center, with a population of over 9 million people in the greater Nagoya area.
Judo, a martial art that emphasizes throws and grappling techniques, was developed in Japan in the late 19th century and has become a popular sport around the world.
Japan has a popular game show called "Silent Library" where contestants have to perform challenges in a library without making any noise.
