Triple

T4234507

Position	Surface form	Disambiguated ID	Type / Status
Subject	Leadville, Colorado	`E94659`	entity
Predicate	hasAttraction	`P105`	FINISHED
Object	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.	`E424815`	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: Leadville Colorado & Southern Railroad | Statement: [Leadville, Colorado, hasAttraction, Leadville Colorado & Southern Railroad]

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Leadville Colorado & Southern Railroad
Context triple: [Leadville, Colorado, hasAttraction, Leadville Colorado & Southern Railroad]

A. Denver and Rio Grande Western Railroad
The Denver and Rio Grande Western Railroad was a historic U.S. railroad known for its scenic mountain routes through Colorado and Utah and its role in transcontinental passenger and freight service.
B. Atchison, Topeka and Santa Fe Railway
The Atchison, Topeka and Santa Fe Railway was a major American railroad that became one of the largest and most influential rail systems in the United States, central to the development of the Southwest.
C. Winchester and Western Railroad
Winchester and Western Railroad is a regional shortline railroad that operates freight services in parts of the Mid-Atlantic United States, including the South Jersey area.
D. Union Pacific West Line
The Union Pacific West Line is a commuter rail route in the Chicago metropolitan area that runs between downtown Chicago and western suburbs, providing daily passenger service as part of the Metra system.
E. Virginia and Truckee Railroad
The Virginia and Truckee Railroad was a historic 19th-century short-line railway in Nevada that played a crucial role in transporting ore, supplies, and passengers for the Comstock Lode mining boom.
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: Leadville Colorado & Southern Railroad
Triple: [Leadville, Colorado, hasAttraction, Leadville Colorado & Southern Railroad]

Generated description

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.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Leadville Colorado & Southern Railroad
Target entity description: 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.

A. Denver and Rio Grande Western Railroad
The Denver and Rio Grande Western Railroad was a historic U.S. railroad known for its scenic mountain routes through Colorado and Utah and its role in transcontinental passenger and freight service.
B. Atchison, Topeka and Santa Fe Railway
The Atchison, Topeka and Santa Fe Railway was a major American railroad that became one of the largest and most influential rail systems in the United States, central to the development of the Southwest.
C. Winchester and Western Railroad
Winchester and Western Railroad is a regional shortline railroad that operates freight services in parts of the Mid-Atlantic United States, including the South Jersey area.
D. Union Pacific West Line
The Union Pacific West Line is a commuter rail route in the Chicago metropolitan area that runs between downtown Chicago and western suburbs, providing daily passenger service as part of the Metra system.
E. Virginia and Truckee Railroad
The Virginia and Truckee Railroad was a historic 19th-century short-line railway in Nevada that played a crucial role in transporting ore, supplies, and passengers for the Comstock Lode mining boom.
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_69b34537cc6481909cd0a96acbb33ef7`	completed	March 12, 2026, 10:59 p.m.
NER	Named-entity recognition	`batch_69b34e6705548190b695b3789d713b4a`	completed	March 12, 2026, 11:38 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69b5a8630a4481909b9835aad51614b2`	completed	March 14, 2026, 6:26 p.m.
NEDg	Description generation	`batch_69b5aa0d70c08190bdf890f390903139`	completed	March 14, 2026, 6:33 p.m.
NED2	Entity disambiguation (via description)	`batch_69b5ade4d2c48190990b5f3b0d99d43a`	completed	March 14, 2026, 6:50 p.m.

Created at: March 12, 2026, 11:05 p.m.