There is a sport which is called Sumo in Japan.
Two sumo wrestlers fight in a ring about five meters in diameter.
They fight one match per day for 15 days.
There are 6 tournaments each year.
Sumo wrestlers are separated into ranks: the top rank is Yokozuna.
Nowadays there are many foreign sumo wrestlers, including many from Mongolia.
My daughter won 4 free sumo tickets at a shopping mall, so the other day she went to see the sumo tournament.