According to the Records of Ancient Matters, this activity was first performed by a god of thunder and a god of agriculture during a dispute over land ownership. A Hawaiian (20[2])named Chad Rowan began an era of foreign dominance of this activity. A war fan is used by participants in this activity to call out offenses, which are called “forbidden hand.” (0[1])Stablemasters bestow new names on people engaging in this activity (20[1])such as (*) Hakuhō, (0[1])one of its many (10[1])Mongolian (10[1])champions. (10[5]0[5])This activity (10[2])is (10[1])often preceded (0[1])by rituals (10[2])like stomping one leg (10[1])on (10[2])the ground (10[3]0[1])multiple (10[3])times (10[1])or throwing (10[1])salt into the dohyō, a ring on the ground that acts (0[1])as a boundary. (10[1])For 10 points, yokozuna are the highest-ranking athletes in what form of Japanese (10[1])wrestling? (10[3])■END■ (10[4])