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.
Wasabi, a spicy condiment made from a plant similar to horseradish, is often served with sushi and other Japanese dishes.
Yokohama is Japan's second-largest city and a major port city located south of Tokyo, with a population of over 3.7 million people.