Triple
T15976206
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Norfolk and Western Class A |
E387453
|
entity |
| Predicate | relatedClass |
P25008
|
FINISHED |
| Object |
Norfolk and Western Y class
The Norfolk and Western Y class was a series of powerful articulated steam locomotives designed primarily for heavy coal and freight service on the Norfolk and Western Railway.
|
E1187573
|
NE FINISHED |
How this triple was built (4 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: Norfolk and Western Y class | Statement: [Norfolk and Western Class A, relatedClass, Norfolk and Western Y class]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Norfolk and Western Y class Context triple: [Norfolk and Western Class A, relatedClass, Norfolk and Western Y class]
-
A.
Norfolk and Western Class J
The Norfolk and Western Class J was a famed series of streamlined 4-8-4 steam locomotives renowned for their power, efficiency, and elegant design, used primarily for high-speed passenger service in the mid-20th century United States.
-
B.
Norfolk and Western Class A
Norfolk and Western Class A was a series of powerful articulated steam locomotives built for high-speed freight service on the Norfolk and Western Railway in the mid-20th century.
-
C.
EMD GP40
The EMD GP40 is a four-axle diesel-electric locomotive built by Electro-Motive Division in the late 1960s and early 1970s, widely used by North American railroads for freight service.
-
D.
EMD GP40-2H
The EMD GP40-2H is a rebuilt, passenger-equipped variant of the EMD GP40-2 diesel-electric locomotive, featuring head-end power for commuter rail service.
-
E.
EMD GP38-2
The EMD GP38-2 is a widely used four-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division, known for its reliability and versatility in freight service across North America.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Norfolk and Western Y class Triple: [Norfolk and Western Class A, relatedClass, Norfolk and Western Y class]
Generated description
The Norfolk and Western Y class was a series of powerful articulated steam locomotives designed primarily for heavy coal and freight service on the Norfolk and Western Railway.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Norfolk and Western Y class Target entity description: The Norfolk and Western Y class was a series of powerful articulated steam locomotives designed primarily for heavy coal and freight service on the Norfolk and Western Railway.
-
A.
Norfolk and Western Class J
The Norfolk and Western Class J was a famed series of streamlined 4-8-4 steam locomotives renowned for their power, efficiency, and elegant design, used primarily for high-speed passenger service in the mid-20th century United States.
-
B.
Norfolk and Western Class A
Norfolk and Western Class A was a series of powerful articulated steam locomotives built for high-speed freight service on the Norfolk and Western Railway in the mid-20th century.
-
C.
EMD GP40
The EMD GP40 is a four-axle diesel-electric locomotive built by Electro-Motive Division in the late 1960s and early 1970s, widely used by North American railroads for freight service.
-
D.
EMD GP40-2H
The EMD GP40-2H is a rebuilt, passenger-equipped variant of the EMD GP40-2 diesel-electric locomotive, featuring head-end power for commuter rail service.
-
E.
EMD GP38-2
The EMD GP38-2 is a widely used four-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division, known for its reliability and versatility in freight service across North America.
- F. None of above. chosen
Provenance (5 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_69d86da94ccc819083d187f5dc6a123e |
completed | April 10, 2026, 3:25 a.m. |
| NER | Named-entity recognition | batch_69e1575166d081909c5275c235c8ce0f |
completed | April 16, 2026, 9:40 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ffc3c76c988190a2f2bb4b6ac5ef25 |
completed | May 9, 2026, 11:31 p.m. |
| NEDg | Description generation | batch_69ffc49bfa088190a6291f560ca9bdb5 |
completed | May 9, 2026, 11:34 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69ffc538a5f0819097ea09f57d3cae35 |
completed | May 9, 2026, 11:37 p.m. |
Created at: April 10, 2026, 4:54 a.m.