Triple
T2102657
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Cambrian Line |
E37124
|
entity |
| Predicate | signallingSystem |
P19148
|
FINISHED |
| Object | ERTMS Level 2 |
E222799
|
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: ERTMS Level 2 | Statement: [Cambrian Line, signallingSystem, ERTMS Level 2]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: ERTMS Level 2 Context triple: [Cambrian Line, signallingSystem, ERTMS Level 2]
-
A.
ETCS Level 2
chosen
ETCS Level 2 is an advanced European train control and signalling standard that enables continuous, cab-based train supervision and high-speed, high-capacity railway operations.
-
B.
European Train Control System
The European Train Control System (ETCS) is a standardized, interoperable train signaling and control system used across Europe and in high-speed railways worldwide to enhance safety and efficiency.
-
C.
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.
-
D.
New Technology Train standards
New Technology Train standards are a set of modern design, performance, and safety specifications developed for New York City Subway rolling stock to improve reliability, efficiency, and passenger experience.
-
E.
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.
- 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_69a8861828948190924aa30c08806b3a |
completed | March 4, 2026, 7:20 p.m. |
| NER | Named-entity recognition | batch_69abbabe1e9081908ea66c5406e2f1d9 |
completed | March 7, 2026, 5:42 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ae3068189c81909cf76fd1fc2a0fe6 |
completed | March 9, 2026, 2:28 a.m. |
Created at: March 4, 2026, 7:43 p.m.