Triple
T20489613
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Keikyū Main Line |
E502702
|
entity |
| Predicate | hasTrainProtectionSystem |
P90154
|
FINISHED |
| Object | ATS (Automatic Train Stop) |
—
|
NE NERFINISHED |
How this triple was built (3 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: ATS (Automatic Train Stop) | Statement: [Keikyū Main Line, hasTrainProtectionSystem, ATS (Automatic Train Stop)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: ATS (Automatic Train Stop) Context triple: [Keikyū Main Line, hasTrainProtectionSystem, ATS (Automatic Train Stop)]
-
A.
Automatic Train Operation (ATO)
Automatic Train Operation (ATO) is a railway control system that automates key driving functions such as acceleration, speed regulation, and braking to improve safety, efficiency, and consistency of train operations.
-
B.
Positive Train Control
Positive Train Control is an advanced, federally mandated train safety technology designed to automatically prevent collisions, overspeed derailments, and other dangerous train movements.
-
C.
Train Protection & Warning System
Train Protection & Warning System is a British railway safety system designed to automatically stop or slow trains to prevent collisions and signal passed at danger incidents.
-
D.
Automatic Train Control
Automatic Train Control is a railway safety and control system that automates train operations such as speed regulation and braking to prevent collisions and ensure safe, efficient train movement.
-
E.
Automatic Train Stop
chosen
Automatic Train Stop is a railway safety system that automatically halts a train if it passes a signal at danger or exceeds certain operational limits, helping prevent collisions and signal overruns.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: hasTrainProtectionSystem Context triple: [Keikyū Main Line, hasTrainProtectionSystem, ATS (Automatic Train Stop)]
-
A.
trainProtection
chosen
Indicates that one entity provides safety measures or defensive mechanisms for a train during its operation.
-
B.
hasAutomaticTrainControlCompatibility
Indicates that an entity is compatible with, or supports integration with, an automatic train control (ATC) system.
-
C.
hasIntruderDetectionSystem
Indicates that an entity is equipped with a system designed to detect unauthorized or intruding entities.
-
D.
hasAutomaticTrainControl
Indicates that an entity is equipped with or uses an automatic train control system for managing train operations.
-
E.
hasPassengerInformationSystem
Indicates that an entity is equipped with a system that provides information to passengers, such as schedules, announcements, or travel updates.
- F. None of above.
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_69e0b4b0373881909dd3e9387f82eab4 |
completed | April 16, 2026, 10:06 a.m. |
| NER | Named-entity recognition | batch_69e69b5d93ec81908259696359090b35 |
completed | April 20, 2026, 9:32 p.m. |
| PD | Predicate disambiguation | batch_69e59fcdf6e08190a604204615dc56e6 |
completed | April 20, 2026, 3:38 a.m. |
Created at: April 16, 2026, 11:34 a.m.