Triple
T8881517
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | LNER Class P2 |
E211420
|
entity |
| Predicate | heritageProjectOperator |
P56395
|
FINISHED |
| Object |
A1 Steam Locomotive Trust
The A1 Steam Locomotive Trust is a British charitable organization dedicated to designing, building, and operating new mainline steam locomotives to historic LNER designs.
|
E764185
|
NE FINISHED |
How this triple was built (5 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: A1 Steam Locomotive Trust | Statement: [LNER Class P2, heritageProjectOperator, A1 Steam Locomotive Trust]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: A1 Steam Locomotive Trust Context triple: [LNER Class P2, heritageProjectOperator, A1 Steam Locomotive Trust]
-
A.
Bluebell Railway
Bluebell Railway is a renowned preserved heritage railway in Sussex, England, operating historic steam trains through scenic countryside and serving as a popular tourist attraction and film location.
-
B.
Dartmouth Steam Railway
Dartmouth Steam Railway is a heritage steam-operated tourist railway in Devon, England, running along the scenic coast and River Dart between Paignton and Kingswear.
-
C.
Cambrian Heritage Railways
Cambrian Heritage Railways is a preserved heritage railway in Shropshire, England, dedicated to restoring and operating former Cambrian Railways lines and rolling stock for historical and tourist purposes.
-
D.
Cambrian Railways
Cambrian Railways was a historic railway company in Wales that operated an extensive network of rural lines across mid- and west Wales before becoming part of the Great Western Railway in the early 20th century.
-
E.
Taff Vale Railway
Taff Vale Railway was a historic Welsh railway company that played a key role in transporting coal and passengers in South Wales during the 19th and early 20th centuries.
- 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: A1 Steam Locomotive Trust Triple: [LNER Class P2, heritageProjectOperator, A1 Steam Locomotive Trust]
Generated description
The A1 Steam Locomotive Trust is a British charitable organization dedicated to designing, building, and operating new mainline steam locomotives to historic LNER designs.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: A1 Steam Locomotive Trust Target entity description: The A1 Steam Locomotive Trust is a British charitable organization dedicated to designing, building, and operating new mainline steam locomotives to historic LNER designs.
-
A.
Bluebell Railway
Bluebell Railway is a renowned preserved heritage railway in Sussex, England, operating historic steam trains through scenic countryside and serving as a popular tourist attraction and film location.
-
B.
Dartmouth Steam Railway
Dartmouth Steam Railway is a heritage steam-operated tourist railway in Devon, England, running along the scenic coast and River Dart between Paignton and Kingswear.
-
C.
Cambrian Heritage Railways
Cambrian Heritage Railways is a preserved heritage railway in Shropshire, England, dedicated to restoring and operating former Cambrian Railways lines and rolling stock for historical and tourist purposes.
-
D.
Cambrian Railways
Cambrian Railways was a historic railway company in Wales that operated an extensive network of rural lines across mid- and west Wales before becoming part of the Great Western Railway in the early 20th century.
-
E.
Taff Vale Railway
Taff Vale Railway was a historic Welsh railway company that played a key role in transporting coal and passengers in South Wales during the 19th and early 20th centuries.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: heritageProjectOperator Context triple: [LNER Class P2, heritageProjectOperator, A1 Steam Locomotive Trust]
-
A.
heritageOperator
chosen
Indicates that an entity operates, manages, or runs a heritage-related site, service, or asset.
-
B.
isHeritageOperation
Indicates that an operation is designated as a heritage-related activity, typically involving the preservation, restoration, or maintenance of culturally or historically significant assets or practices.
-
C.
heritageService
Indicates that an entity provides, manages, or is associated with services related to the preservation, interpretation, or promotion of cultural or natural heritage.
-
D.
heritageManagement
Indicates the management, preservation, and regulation of cultural or natural heritage resources by responsible entities.
-
E.
heritageComponent
Indicates that one entity forms a constituent or contributing part of another entity’s cultural or historical heritage.
- F. None of above.
Provenance (6 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_69ca838f9e20819096ab1f236a70381a |
completed | March 30, 2026, 2:07 p.m. |
| NER | Named-entity recognition | batch_69cc6168e3d881908c58cf11cf5f9a0e |
completed | April 1, 2026, 12:06 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69cfabca74888190934593d6504fbed1 |
completed | April 3, 2026, noon |
| NEDg | Description generation | batch_69cfac9c743c8190a26f753111f07281 |
completed | April 3, 2026, 12:03 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69cfad54cf5c81908558fd4c21f2f3b6 |
completed | April 3, 2026, 12:06 p.m. |
| PD | Predicate disambiguation | batch_69cc5c2956788190a311c647b4da17a6 |
completed | March 31, 2026, 11:43 p.m. |
Created at: March 30, 2026, 6:53 p.m.