Triple

T8794953
Position Surface form Disambiguated ID Type / Status
Subject Corcovado Rack Railway E209266 entity
Predicate rackSystem P47740 FINISHED
Object Riggenbach rack system
The Riggenbach rack system is an early and widely used rack railway technology that employs a ladder-like central rail to enable trains to climb steep gradients safely.
 E759056 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: Riggenbach rack system | Statement: [Corcovado Rack Railway, rackSystem, Riggenbach rack system]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Riggenbach rack system
Context triple: [Corcovado Rack Railway, rackSystem, Riggenbach rack system]
  • A. Scharfenberg coupler
    The Scharfenberg coupler is an automatic railway coupling system widely used on modern passenger trains to quickly connect and disconnect cars while integrating mechanical, pneumatic, and electrical links.
  • B. Ritschel
    Ritschel is a German surname best known as the maiden name of Magda Goebbels, the wife of Nazi propaganda minister Joseph Goebbels.
  • C. Binnig
    Binnig is a German surname most notably associated with physicist Gerd Binnig, co-inventor of the scanning tunneling microscope and Nobel Prize laureate.
  • D. Espee
    Espee is a common nickname for the historic Southern Pacific Railroad, a major American railroad that operated in the western United States.
  • E. Rorschach–Heiden rack railway
    The Rorschach–Heiden rack railway is a Swiss mountain railway line that climbs steeply from the lakeside town of Rorschach to the higher-altitude village of Heiden using a rack-and-pinion system.
  • 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: Riggenbach rack system
Triple: [Corcovado Rack Railway, rackSystem, Riggenbach rack system]
Generated description
The Riggenbach rack system is an early and widely used rack railway technology that employs a ladder-like central rail to enable trains to climb steep gradients safely.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Riggenbach rack system
Target entity description: The Riggenbach rack system is an early and widely used rack railway technology that employs a ladder-like central rail to enable trains to climb steep gradients safely.
  • A. Scharfenberg coupler
    The Scharfenberg coupler is an automatic railway coupling system widely used on modern passenger trains to quickly connect and disconnect cars while integrating mechanical, pneumatic, and electrical links.
  • B. Ritschel
    Ritschel is a German surname best known as the maiden name of Magda Goebbels, the wife of Nazi propaganda minister Joseph Goebbels.
  • C. Binnig
    Binnig is a German surname most notably associated with physicist Gerd Binnig, co-inventor of the scanning tunneling microscope and Nobel Prize laureate.
  • D. Espee
    Espee is a common nickname for the historic Southern Pacific Railroad, a major American railroad that operated in the western United States.
  • E. Rorschach–Heiden rack railway
    The Rorschach–Heiden rack railway is a Swiss mountain railway line that climbs steeply from the lakeside town of Rorschach to the higher-altitude village of Heiden using a rack-and-pinion system.
  • 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_69ca836240888190a62b262e56a69d2f completed March 30, 2026, 2:06 p.m.
NER Named-entity recognition batch_69cc5fa0c6008190a5c4d87510ad5bbd completed March 31, 2026, 11:58 p.m.
NED1 Entity disambiguation (via context triple) batch_69cf6f532ed48190a21996f865428831 completed April 3, 2026, 7:42 a.m.
NEDg Description generation batch_69cf7041b6bc81909924d1382b756746 completed April 3, 2026, 7:46 a.m.
NED2 Entity disambiguation (via description) batch_69cf7163e2088190bf252896cc4036b2 completed April 3, 2026, 7:51 a.m.
Created at: March 30, 2026, 6:43 p.m.