Triple
T5758079
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Denver and Rio Grande Western Railroad |
E127019
|
entity |
| Predicate | heritagePreservedBy |
P16342
|
FINISHED |
| Object |
Durango and Silverton Narrow Gauge Railroad
The Durango and Silverton Narrow Gauge Railroad is a historic, steam-powered narrow-gauge tourist railway in Colorado that preserves and operates a scenic portion of the former Denver and Rio Grande Western Railroad line through the Rocky Mountains.
|
E543419
|
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: Durango and Silverton Narrow Gauge Railroad | Statement: [Denver and Rio Grande Western Railroad, heritagePreservedBy, Durango and Silverton Narrow Gauge Railroad]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Durango and Silverton Narrow Gauge Railroad Context triple: [Denver and Rio Grande Western Railroad, heritagePreservedBy, Durango and Silverton Narrow Gauge Railroad]
-
A.
Royal Gorge Route Railroad
The Royal Gorge Route Railroad is a scenic heritage railway in Colorado that offers passenger excursions through the dramatic Royal Gorge along the Arkansas River.
-
B.
Broadmoor Manitou and Pikes Peak Cog Railway
The Broadmoor Manitou and Pikes Peak Cog Railway is a historic cog railroad in Colorado that carries passengers from Manitou Springs to the summit of Pikes Peak, offering scenic mountain views along one of the highest cog railways in the world.
-
C.
Cumbres and Toltec Scenic Railroad
The Cumbres and Toltec Scenic Railroad is a historic narrow-gauge heritage railway running between Colorado and New Mexico, renowned for its preserved steam locomotives and dramatic Rocky Mountain scenery.
-
D.
Verde Canyon Railroad
Verde Canyon Railroad is a heritage scenic railway in Arizona that offers passenger excursions through the rugged and picturesque Verde Canyon along the Verde River.
-
E.
Leadville Colorado & Southern Railroad
The Leadville Colorado & Southern Railroad is a heritage tourist railway in Leadville, Colorado, offering scenic rides through the Rocky Mountains along historic narrow-gauge mining routes.
- 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: Durango and Silverton Narrow Gauge Railroad Triple: [Denver and Rio Grande Western Railroad, heritagePreservedBy, Durango and Silverton Narrow Gauge Railroad]
Generated description
The Durango and Silverton Narrow Gauge Railroad is a historic, steam-powered narrow-gauge tourist railway in Colorado that preserves and operates a scenic portion of the former Denver and Rio Grande Western Railroad line through the Rocky Mountains.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Durango and Silverton Narrow Gauge Railroad Target entity description: The Durango and Silverton Narrow Gauge Railroad is a historic, steam-powered narrow-gauge tourist railway in Colorado that preserves and operates a scenic portion of the former Denver and Rio Grande Western Railroad line through the Rocky Mountains.
-
A.
Royal Gorge Route Railroad
The Royal Gorge Route Railroad is a scenic heritage railway in Colorado that offers passenger excursions through the dramatic Royal Gorge along the Arkansas River.
-
B.
Broadmoor Manitou and Pikes Peak Cog Railway
The Broadmoor Manitou and Pikes Peak Cog Railway is a historic cog railroad in Colorado that carries passengers from Manitou Springs to the summit of Pikes Peak, offering scenic mountain views along one of the highest cog railways in the world.
-
C.
Cumbres and Toltec Scenic Railroad
The Cumbres and Toltec Scenic Railroad is a historic narrow-gauge heritage railway running between Colorado and New Mexico, renowned for its preserved steam locomotives and dramatic Rocky Mountain scenery.
-
D.
Verde Canyon Railroad
Verde Canyon Railroad is a heritage scenic railway in Arizona that offers passenger excursions through the rugged and picturesque Verde Canyon along the Verde River.
-
E.
Leadville Colorado & Southern Railroad
The Leadville Colorado & Southern Railroad is a heritage tourist railway in Leadville, Colorado, offering scenic rides through the Rocky Mountains along historic narrow-gauge mining routes.
- 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_69c00833a3fc81908f4bc29ed011b7a6 |
completed | March 22, 2026, 3:18 p.m. |
| NER | Named-entity recognition | batch_69c029363c988190b12f3f7b68295748 |
completed | March 22, 2026, 5:39 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c07e4c70808190a31bb41d4baa5865 |
completed | March 22, 2026, 11:42 p.m. |
| NEDg | Description generation | batch_69c086e3b6d8819096f1c7571a2b6f5b |
completed | March 23, 2026, 12:18 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69c0879425b88190bf989710847315c9 |
completed | March 23, 2026, 12:21 a.m. |
Created at: March 22, 2026, 3:49 p.m.