Triple
T6312741
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Tokyo Metro 8000 series |
E141542
|
entity |
| Predicate | safetySystem |
P840
|
FINISHED |
| Object | Tobu ATS |
E532684
|
NE FINISHED |
How this triple was built (2 steps)
Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.
NER
Named-entity recognition
gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Tobu ATS | Statement: [Tokyo Metro 8000 series, safetySystem, Tobu ATS]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Tobu ATS Context triple: [Tokyo Metro 8000 series, safetySystem, Tobu ATS]
-
A.
Tobu ATS
chosen
Tobu ATS is an automatic train stop safety system used on Tobu Railway lines in Japan to prevent collisions and signal overruns.
-
B.
Tobu 9000 series
The Tobu 9000 series is a Japanese electric multiple unit train type operated by Tobu Railway, commonly used for inter-running services with Tokyo Metro lines in the Tokyo metropolitan area.
-
C.
Tokyu ATS
Tokyu ATS is an automatic train stop safety system used on Tokyu Corporation and compatible railway lines to prevent trains from passing signals at danger and to enhance operational safety.
-
D.
Tobu 50050 series
The Tobu 50050 series is a Japanese electric multiple unit train operated by Tobu Railway, designed for through-services with Tokyo Metro and known for its modern commuter-oriented features.
-
E.
Tobu Railway
Tobu Railway is a major private railway company in Japan that operates extensive rail networks in the Greater Tokyo area and surrounding regions.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 batches)
The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.
| Step | Stage | Batch ID | Status | When |
|---|---|---|---|---|
| creating | Elicitation | batch_69c008d00efc8190a36c05b4b4a3bf4b |
completed | March 22, 2026, 3:20 p.m. |
| NER | Named-entity recognition | batch_69c0649ea98c819086509e175812c6c0 |
completed | March 22, 2026, 9:52 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c5e469355c81908049e0c68a8c0259 |
completed | March 27, 2026, 1:59 a.m. |
Created at: March 22, 2026, 4:28 p.m.