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EngineVersion 1osClasses

os:ValidityPeriod

A time period representing when a statement was valid.

Extends: ExplicitTimePeriod

Statements can have multiple validity periods (e.g., robot on/off/on/off). No os:validTo means currently valid.

os:SystemProcess

A process initiated by the system rather than by user action.

os:ValueFunction

Extracts a typed value via SPARQL SELECT with ?value binding. Useful in cases of dynamic values that depend on some context state.