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- unitOfMeasurement (but preferably more tightly typed)
- Universe and/Or Population (UltimateFeatureOfInterest/FeatureOfInterest)
- UnitType (individual sample, SampledFeature)
- do the Units have identifiers? (to enable joining on unit with other data)
- SubstantiveValueDomain (or maybe ConceptualDomain)
- SentinelValueDomain?????
- Capture (although may need to be abstracted)
Need to distinguish these for use - either as Discovery or Assessability
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