What type of details about kiyonomori masao can be gathered from the following bio? Bio: kiyonomori masao -lrb- born 8 april 1935 as masao sasaki -rrb- is a former sumo wrestler from Omori , akita , japan . he made his professional debut in january 1953 and reached the top division in march 1959 . his highest rank was '' maegashira '' 9 . upon retirement from active competition he became an elder in the japan sumo association and took charge of kise stable from his father-in-law katsuragawa . he reached the sumo association 's mandatory retirement age in april 2000 .
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