Assertion: full moon's effect | /r/CreatedBy | smoke
Facets:
value: in the atmosphere
type: LOCATION
Source sentences:
text: The effect can be caused by smoke or dust particles in the atmosphere, as has happened after forest fires in Sweden and Canada in 1950 and 1951, and after the eruption of Krakatoa in 1883, which caused the moon to appear blue for nearly two years.