Optionalagent?: stringprov:wasAssociatedWith — agent IRI or label.
OptionalformulaId?: stringIRI or local id of the generating formula slot.
OptionalgeneratedAt?: stringISO timestamp (prov:generatedAtTime).
OptionalinputFingerprint?: stringFingerprint of inputs at generation time.
OptionallensId?: stringLens document id when value was migrated at read time.
Optionalstratum?: numberStratification layer when generated by the calc runtime.
W3C PROV-aligned generation activity for computed values, lens migrations, etc.