write aparagraph on the mystery of UFO use these hints to write.
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An unidentified flying object (UFO) is any aerial phenomenon that cannot immediately be identified or explained. Most UFOs are identified or investigated as conventional objects or phenomena. The term is widely used for claimed observations of extraterrestrial spacecraft, and was coined as an anacronym by Project Blue Book project head Edward J. Ruppelt. Many UFOs are described as being flying saucers.
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