Temporal envelope per Hindsight Eq. 1 fields τs, τe, τm. ISO 8601 strings; missing start / end indicates an instant rather than an interval. mention is always populated — it's the timestamp at which the fact was authored.
start
end
mention
Optional
Interval start (inclusive). ISO 8601. Optional for instant facts.
Interval end (inclusive). ISO 8601. Optional for instant facts.
Mention timestamp — when the fact was first authored. ISO 8601.
Temporal envelope per Hindsight Eq. 1 fields τs, τe, τm. ISO 8601 strings; missing
start/endindicates an instant rather than an interval.mentionis always populated — it's the timestamp at which the fact was authored.