Input (grade 13): The is a period of Japanese history that marks the governance by the Kamakura Shogunate, officially established in 1192 in Kamakura by the first shogun Minamoto no Yoritomo.
Output (grade 12): 1185 (Genryaku 2, 24th day of the 3rd month): Taira clan (Heike) defeated at sea in the Battle of Dan-no-ura by forces led by Minamoto YoshitsuneKitagawa et al.