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_ Underwater Cave Holds Oldest Human Skeleton in the Americas
http://voices.nationalgeographic.com/2016/11/02/giant-underwater-cave-hiding-oldest-human-skeleton-in-americas/
将棋の日, ドラフト記念日, 蓮根の日, 国際学生の日(International Students' Day),
肺がん撲滅デー, 島原防災の日, 談山神社もみじ祭（奈良県桜井市）,
