Triple
T20172950
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | 1996 Stock |
E492012
|
entity |
| Predicate | controlSystem |
P840
|
FINISHED |
| Object | GEC Alsthom VVVF inverter |
—
|
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: GEC Alsthom VVVF inverter | Statement: [1996 Stock, controlSystem, GEC Alsthom VVVF inverter]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: GEC Alsthom VVVF inverter Context triple: [1996 Stock, controlSystem, GEC Alsthom VVVF inverter]
-
A.
Alstom Euroduplex
The Alstom Euroduplex is a high-speed, double-deck electric multiple unit train designed for long-distance services on advanced rail networks such as Morocco’s Al Boraq line.
-
B.
Siemens ACS-64
The Siemens ACS-64 is a high-speed, electric locomotive used by Amtrak for passenger rail service in the United States.
-
C.
Siemens Vectron
Siemens Vectron is a modular family of electric and diesel-electric locomotives designed for versatile passenger and freight operations across European rail networks.
-
D.
Ge 4/4 II electric locomotive
The Ge 4/4 II is a class of narrow-gauge electric locomotives used by Swiss alpine railways, known for their reliability and versatility in both passenger and freight service on steep, winding mountain lines.
-
E.
Alstom Metropolis
Alstom Metropolis is a family of modern, high-capacity metro trains manufactured by Alstom and used in urban rapid transit systems worldwide.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: GEC Alsthom VVVF inverter Target entity description: The GEC Alsthom VVVF inverter is an electric traction drive system that uses variable-voltage, variable-frequency control to efficiently power and regulate the motors of modern rail vehicles.
-
A.
Alstom Euroduplex
The Alstom Euroduplex is a high-speed, double-deck electric multiple unit train designed for long-distance services on advanced rail networks such as Morocco’s Al Boraq line.
-
B.
Siemens ACS-64
The Siemens ACS-64 is a high-speed, electric locomotive used by Amtrak for passenger rail service in the United States.
-
C.
Siemens Vectron
Siemens Vectron is a modular family of electric and diesel-electric locomotives designed for versatile passenger and freight operations across European rail networks.
-
D.
Ge 4/4 II electric locomotive
The Ge 4/4 II is a class of narrow-gauge electric locomotives used by Swiss alpine railways, known for their reliability and versatility in both passenger and freight service on steep, winding mountain lines.
-
E.
Alstom Metropolis
Alstom Metropolis is a family of modern, high-capacity metro trains manufactured by Alstom and used in urban rapid transit systems worldwide.
- F. None of above. chosen
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_69da6266c6888190bc1a3ecf24814d34 |
completed | April 11, 2026, 3:01 p.m. |
| NER | Named-entity recognition | batch_69e66849709c81909b65b421282f9f3b |
completed | April 20, 2026, 5:54 p.m. |
Created at: April 11, 2026, 11:35 p.m.