Triple

T13435204

Position	Surface form	Disambiguated ID	Type / Status
Subject	Derwent Valley Line	`E320210`	entity
Predicate	hasHeritageConnection	`P83897`	FINISHED
Object	Peak Rail (heritage railway at Matlock) Peak Rail is a preserved heritage railway in Derbyshire, England, operating steam and diesel services along part of the former Midland Railway route near Matlock in the Derwent Valley.	`E1041675`	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: Peak Rail (heritage railway at Matlock) | Statement: [Derwent Valley Line, hasHeritageConnection, Peak Rail (heritage railway at Matlock)]

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

Target entity: Peak Rail (heritage railway at Matlock)
Context triple: [Derwent Valley Line, hasHeritageConnection, Peak Rail (heritage railway at Matlock)]

A. Cromford and High Peak Railway
The Cromford and High Peak Railway was an early 19th-century English industrial railway in Derbyshire, notable for its steep inclines and role in linking canal and rail transport during the early development of the railway network.
B. Hetton Colliery Railway
Hetton Colliery Railway was one of the world’s earliest purpose-built steam-powered colliery railways in northeast England, notable for pioneering early railway engineering and coal transport.
C. Weardale Railway
Weardale Railway is a heritage railway line in County Durham, England, operating passenger services along part of the former Weardale branch of the national rail network.
D. Keighley and Worth Valley Railway
The Keighley and Worth Valley Railway is a preserved heritage steam and diesel railway in West Yorkshire, England, running through the Worth Valley and popular for its scenic rides and historical charm.
E. Lakeside and Haverthwaite Railway
The Lakeside and Haverthwaite Railway is a preserved heritage railway in Cumbria, England, known for operating steam and historic diesel trains through the scenic Leven Valley near Lake Windermere.
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: Peak Rail (heritage railway at Matlock)
Triple: [Derwent Valley Line, hasHeritageConnection, Peak Rail (heritage railway at Matlock)]

Generated description

Peak Rail is a preserved heritage railway in Derbyshire, England, operating steam and diesel services along part of the former Midland Railway route near Matlock in the Derwent Valley.

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

Target entity: Peak Rail (heritage railway at Matlock)
Target entity description: Peak Rail is a preserved heritage railway in Derbyshire, England, operating steam and diesel services along part of the former Midland Railway route near Matlock in the Derwent Valley.

A. Cromford and High Peak Railway
The Cromford and High Peak Railway was an early 19th-century English industrial railway in Derbyshire, notable for its steep inclines and role in linking canal and rail transport during the early development of the railway network.
B. Hetton Colliery Railway
Hetton Colliery Railway was one of the world’s earliest purpose-built steam-powered colliery railways in northeast England, notable for pioneering early railway engineering and coal transport.
C. Weardale Railway
Weardale Railway is a heritage railway line in County Durham, England, operating passenger services along part of the former Weardale branch of the national rail network.
D. Keighley and Worth Valley Railway
The Keighley and Worth Valley Railway is a preserved heritage steam and diesel railway in West Yorkshire, England, running through the Worth Valley and popular for its scenic rides and historical charm.
E. Lakeside and Haverthwaite Railway
The Lakeside and Haverthwaite Railway is a preserved heritage railway in Cumbria, England, known for operating steam and historic diesel trains through the scenic Leven Valley near Lake Windermere.
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_69d80761e6cc8190a90c844589998ecc`	completed	April 9, 2026, 8:09 p.m.
NER	Named-entity recognition	`batch_69dbaee29fec81908b07b4fca2922242`	completed	April 12, 2026, 2:40 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69f739902d148190ac14ac66f1f9512f`	completed	May 3, 2026, 12:03 p.m.
NEDg	Description generation	`batch_69f73d6051e48190a39e8de98bfb839a`	completed	May 3, 2026, 12:19 p.m.
NED2	Entity disambiguation (via description)	`batch_69f7411fbb9481908f0106b01f2583bf`	completed	May 3, 2026, 12:35 p.m.

Created at: April 9, 2026, 9:40 p.m.