Triple

T16863096
Position Surface form Disambiguated ID Type / Status
Subject Furka Base Tunnel E409969 entity
Predicate railwayLine P848 FINISHED
Object Furka–Oberalp line
The Furka–Oberalp line is a historic Swiss metre-gauge mountain railway crossing the Alps between the cantons of Valais, Uri, and Graubünden, renowned for its steep gradients, scenic vistas, and partial operation as a heritage steam railway.
E1258484 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–Oberalp line | Statement: [Furka Base Tunnel, railwayLine, Furka–Oberalp line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Furka–Oberalp line
Context triple: [Furka Base Tunnel, railwayLine, Furka–Oberalp line]
  • A. Engadin line
    The Engadin line is a scenic metre-gauge railway route in Switzerland’s canton of Graubünden that runs through the Engadin valley as part of the Rhaetian Railway network.
  • B. Brünig railway line
    The Brünig railway line is a scenic Swiss metre-gauge rail route operated by Zentralbahn that connects Lucerne and Interlaken across the Alps.
  • C. Lötschberg railway line
    The Lötschberg railway line is a major Swiss Alpine rail route operated by BLS that connects the Bernese Oberland with the Valais through long tunnels and dramatic mountain scenery.
  • D. Landquart–Davos railway line
    The Landquart–Davos railway line is a Swiss metre-gauge mountain railway operated by the Rhaetian Railway, linking the town of Landquart with the alpine resort of Davos through the canton of Graubünden.
  • E. Davos–Filisur railway line
    The Davos–Filisur railway line is a scenic metre-gauge mountain railway in the Swiss canton of Graubünden, known for its dramatic alpine landscapes, tunnels, and viaducts operated by the Rhaetian Railway.
  • 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–Oberalp line
Triple: [Furka Base Tunnel, railwayLine, Furka–Oberalp line]
Generated description
The Furka–Oberalp line is a historic Swiss metre-gauge mountain railway crossing the Alps between the cantons of Valais, Uri, and Graubünden, renowned for its steep gradients, scenic vistas, and partial operation as a heritage steam railway.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Furka–Oberalp line
Target entity description: The Furka–Oberalp line is a historic Swiss metre-gauge mountain railway crossing the Alps between the cantons of Valais, Uri, and Graubünden, renowned for its steep gradients, scenic vistas, and partial operation as a heritage steam railway.
  • A. Engadin line
    The Engadin line is a scenic metre-gauge railway route in Switzerland’s canton of Graubünden that runs through the Engadin valley as part of the Rhaetian Railway network.
  • B. Brünig railway line
    The Brünig railway line is a scenic Swiss metre-gauge rail route operated by Zentralbahn that connects Lucerne and Interlaken across the Alps.
  • C. Lötschberg railway line
    The Lötschberg railway line is a major Swiss Alpine rail route operated by BLS that connects the Bernese Oberland with the Valais through long tunnels and dramatic mountain scenery.
  • D. Landquart–Davos railway line
    The Landquart–Davos railway line is a Swiss metre-gauge mountain railway operated by the Rhaetian Railway, linking the town of Landquart with the alpine resort of Davos through the canton of Graubünden.
  • E. Davos–Filisur railway line
    The Davos–Filisur railway line is a scenic metre-gauge mountain railway in the Swiss canton of Graubünden, known for its dramatic alpine landscapes, tunnels, and viaducts operated by the Rhaetian Railway.
  • 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_69d88395e6c88190b22730f335107c14 completed April 10, 2026, 4:59 a.m.
NER Named-entity recognition batch_69e3b50488fc8190b3b646543c3ba476 completed April 18, 2026, 4:44 p.m.
NED1 Entity disambiguation (via context triple) batch_6a0170dd38708190b17cee0ab6cee6eb completed May 11, 2026, 6:02 a.m.
NEDg Description generation batch_6a0172b0b8a48190a2c783c3e626a6f4 completed May 11, 2026, 6:09 a.m.
NED2 Entity disambiguation (via description) batch_6a0173557bd48190b2061be60e57c0e7 completed May 11, 2026, 6:12 a.m.
Created at: April 10, 2026, 5:24 a.m.