Triple
T10774629
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Steamtown National Historic Site |
E254165
|
entity |
| Predicate | hasLocomotive |
P12267
|
FINISHED |
| Object |
Canadian National 2-8-2 No. 3254
Canadian National 2-8-2 No. 3254 is a preserved Canadian National Railway Mikado-type steam locomotive renowned for its excursion service and display at Steamtown.
|
E884971
|
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: Canadian National 2-8-2 No. 3254 | Statement: [Steamtown National Historic Site, hasLocomotive, Canadian National 2-8-2 No. 3254]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Canadian National 2-8-2 No. 3254 Context triple: [Steamtown National Historic Site, hasLocomotive, Canadian National 2-8-2 No. 3254]
-
A.
USRA Heavy Mikado 2-8-2
The USRA Heavy Mikado 2-8-2 was a standardized World War I–era American steam freight locomotive design known for its robust construction, high tractive effort, and widespread use across multiple railroads.
-
B.
Nickel Plate Road 2-8-4 Berkshires
The Nickel Plate Road 2-8-4 Berkshires were powerful high-speed steam freight locomotives famed for their role in hauling fast freight trains across the Nickel Plate Road in the mid-20th century.
-
C.
USRA Light Mikado 2-8-2
The USRA Light Mikado 2-8-2 was a widely used World War I–era American freight steam locomotive type designed for balanced performance and standardized construction across multiple railroads.
-
D.
B&O No. 4500
B&O No. 4500 is a historic Baltimore & Ohio Railroad steam locomotive preserved for its significance in early 20th-century American railroading.
-
E.
USRA Light Mountain 4-8-2
The USRA Light Mountain 4-8-2 was a standardized World War I–era American steam locomotive design used by multiple railroads for mixed-traffic service under the United States Railroad Administration.
- 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: Canadian National 2-8-2 No. 3254 Triple: [Steamtown National Historic Site, hasLocomotive, Canadian National 2-8-2 No. 3254]
Generated description
Canadian National 2-8-2 No. 3254 is a preserved Canadian National Railway Mikado-type steam locomotive renowned for its excursion service and display at Steamtown.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Canadian National 2-8-2 No. 3254 Target entity description: Canadian National 2-8-2 No. 3254 is a preserved Canadian National Railway Mikado-type steam locomotive renowned for its excursion service and display at Steamtown.
-
A.
USRA Heavy Mikado 2-8-2
The USRA Heavy Mikado 2-8-2 was a standardized World War I–era American steam freight locomotive design known for its robust construction, high tractive effort, and widespread use across multiple railroads.
-
B.
Nickel Plate Road 2-8-4 Berkshires
The Nickel Plate Road 2-8-4 Berkshires were powerful high-speed steam freight locomotives famed for their role in hauling fast freight trains across the Nickel Plate Road in the mid-20th century.
-
C.
USRA Light Mikado 2-8-2
The USRA Light Mikado 2-8-2 was a widely used World War I–era American freight steam locomotive type designed for balanced performance and standardized construction across multiple railroads.
-
D.
B&O No. 4500
B&O No. 4500 is a historic Baltimore & Ohio Railroad steam locomotive preserved for its significance in early 20th-century American railroading.
-
E.
USRA Light Mountain 4-8-2
The USRA Light Mountain 4-8-2 was a standardized World War I–era American steam locomotive design used by multiple railroads for mixed-traffic service under the United States Railroad Administration.
- 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_69d6aa609f008190a294200aefcb7bd5 |
completed | April 8, 2026, 7:20 p.m. |
| NER | Named-entity recognition | batch_69d7329be784819083b7ec4d85c20acf |
completed | April 9, 2026, 5:01 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69de238559b48190abc759e744ab0f8e |
completed | April 14, 2026, 11:22 a.m. |
| NEDg | Description generation | batch_69de271fb08c8190a44c547083226fd8 |
completed | April 14, 2026, 11:38 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69de2cecc24c8190a240366e0600426a |
completed | April 14, 2026, 12:02 p.m. |
Created at: April 8, 2026, 9:16 p.m.