Triple

T23390468
Position Surface form Disambiguated ID Type / Status
Subject Furka Cogwheel Steam Railway E594001 entity
Predicate operatedBy P86 FINISHED
Object Furka Cogwheel Steam Railway preservation association
The Furka Cogwheel Steam Railway preservation association is a heritage organization dedicated to restoring, maintaining, and operating the historic Furka mountain railway as a living steam-powered museum line in Switzerland.
 E594001 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: Furka Cogwheel Steam Railway preservation association | Statement: [Furka Cogwheel Steam Railway, operatedBy, Furka Cogwheel Steam Railway preservation association]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Furka Cogwheel Steam Railway preservation association
Context triple: [Furka Cogwheel Steam Railway, operatedBy, Furka Cogwheel Steam Railway preservation association]
  • A. Furka Cogwheel Steam Railway
    The Furka Cogwheel Steam Railway is a historic Swiss mountain railway operated with vintage steam locomotives, offering scenic journeys over the Furka Pass between Realp and Oberwald.
  • B. Odontotos rack railway
    The Odontotos rack railway is a historic narrow-gauge cog railway in Greece, renowned for its scenic route through the Vouraikos Gorge between Diakopto and Kalavryta.
  • C. 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.
  • D. Enz Valley Railway
    Enz Valley Railway is a regional railway line in Germany that runs through the Enz Valley, connecting local towns and supporting commuter and tourist travel.
  • E. Hell Valley Railway
    Hell Valley Railway is the English name for the Höllentalbahn, a scenic and steep railway line running through the Höllental (Hell Valley) in Germany’s Black Forest region.
  • 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: Furka Cogwheel Steam Railway preservation association
Triple: [Furka Cogwheel Steam Railway, operatedBy, Furka Cogwheel Steam Railway preservation association]
Generated description
The Furka Cogwheel Steam Railway preservation association is a heritage organization dedicated to restoring, maintaining, and operating the historic Furka mountain railway as a living steam-powered museum line in Switzerland.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Furka Cogwheel Steam Railway preservation association
Target entity description: The Furka Cogwheel Steam Railway preservation association is a heritage organization dedicated to restoring, maintaining, and operating the historic Furka mountain railway as a living steam-powered museum line in Switzerland.
  • A. Furka Cogwheel Steam Railway chosen
    The Furka Cogwheel Steam Railway is a historic Swiss mountain railway operated with vintage steam locomotives, offering scenic journeys over the Furka Pass between Realp and Oberwald.
  • B. Odontotos rack railway
    The Odontotos rack railway is a historic narrow-gauge cog railway in Greece, renowned for its scenic route through the Vouraikos Gorge between Diakopto and Kalavryta.
  • C. 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.
  • D. Enz Valley Railway
    Enz Valley Railway is a regional railway line in Germany that runs through the Enz Valley, connecting local towns and supporting commuter and tourist travel.
  • E. Hell Valley Railway
    Hell Valley Railway is the English name for the Höllentalbahn, a scenic and steep railway line running through the Höllental (Hell Valley) in Germany’s Black Forest region.
  • F. None of above.

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_69e25d2754fc819085deea939bde60ab completed April 17, 2026, 4:17 p.m.
NER Named-entity recognition batch_69f1a49bdfec8190afa592c66660c279 completed April 29, 2026, 6:26 a.m.
NED1 Entity disambiguation (via context triple) batch_6a0c5dec070c81908e86b1c7fc50fc83 completed May 19, 2026, 12:56 p.m.
NEDg Description generation batch_6a0c62311ff48190b740bba58180f100 completed May 19, 2026, 1:14 p.m.
NED2 Entity disambiguation (via description) batch_6a0c62d82f908190acbe1fec58288df9 completed May 19, 2026, 1:17 p.m.
Created at: April 17, 2026, 5:35 p.m.