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Kumo to Chūrippu was created in 1943.
Oort no Kumo was created on 2002-03-20.
Kumo - song - was created on 2000-10-21.
Saka no Ue no Kumo Museum was created in 2007.
Ame (雨)
Not sure whether that's the Japanese or Chinese reading, but I'm guessing it's the kun (Japanese).