Assertion: ufo | /r/AtLocation | sky
Facets:
Source sentences:
text: As a matter of national security, any UFOs seen in the skies were intensely logged and reviewed to keep track of all of these airborne objects being tested during that time.
text: An Unidentified Flying Object or UFO (未確認飛行物体 （みかくにんひこうぶったい）, mikakunin hikou buttai) is any anomaly appearing in the sky that can't be definitively identified or explained as a known phenomenon or object.
text: A UFO is an object seen in the sky or landing on Earth which cannot be identified and which is often believed to be from another planet.
text: An Unidentified Flying Object or UFO (未確認飛行物体 （みかくにんひこうぶったい）, mikakunin hikou buttai) is any anomaly appearing in the sky that can't be definitively identified or explained as a known phenomenon or object.
text: The term foo fighter was used by Allied aircraft pilots in World War II to describe various UFOs or mysterious aerial phenomena seen in the skies over both the European and Pacific theaters of operations.