Triple
T22236576
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | British Rail Class 139 |
E549607
|
entity |
| Predicate | safetySystem |
P840
|
FINISHED |
| Object | Train Protection and Warning System |
—
|
NE NERFINISHED |
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: Train Protection and Warning System | Statement: [British Rail Class 139, safetySystem, Train Protection and Warning System]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Train Protection and Warning System Context triple: [British Rail Class 139, safetySystem, Train Protection and Warning System]
-
A.
Train Protection & Warning System
chosen
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.
-
B.
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.
-
C.
Chinese Train Control System
The Chinese Train Control System is a standardized, multi-level train control and signalling system used across China’s railways to ensure safe, efficient, and high-speed train operations.
-
D.
Automatic Train Supervision
Automatic Train Supervision is a rail signaling subsystem that monitors, regulates, and optimizes train operations in real time, including scheduling, routing, and service regulation.
-
E.
Communications-Based Train Control
Communications-Based Train Control is an advanced railway signaling system that uses continuous, high-capacity data communication between trains and track equipment to safely increase line capacity and operational efficiency.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (2 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_69e11e4102b881909cf47d3768e25c19 |
completed | April 16, 2026, 5:37 p.m. |
| NER | Named-entity recognition | batch_69f12bf7b1d8819091087dcfdb2e967c |
completed | April 28, 2026, 9:51 p.m. |
Created at: April 16, 2026, 8:38 p.m.