| •owl:Thing |
| •SpatioTemporalThing |
| •Perdurant |
| •Event |
| •Phenomenon |
| •EarthSciencePhenomenon |
| •AtmosphericPhenomena |
| •AtmosphericOpticalPhenomenon |
| •AtmosphericLightEmissionPhenomenon |
| •OpticalPhenomenon |
| •AtmosphericOpticalPhenomenon |
| •AtmosphericLightEmissionPhenomenon |