| •owl:Thing |
| •SpatioTemporalThing |
| •Endurant |
| •NonPhysicalEndurant |
| •SocialObject |
| •NonAgentiveSocialObject |
| •Concept |
| •Parameter |
| •MeasurementRelatedThing |
| •MeasurementUnit |
| •DerivedMeasurementUnit |
| isDerivedFromUnit SOME MeasurementUnit |
| isDerivedFromUnit EQ 1 |
| MeasurementUnit |
| isDerivedFromUnit ONLY MeasurementUnit |