Triple

T5014758
Position Surface form Disambiguated ID Type / Status
Subject Snaefell Mountain Railway E112712 entity
Predicate rackSystem P47740 FINISHED
Object Fell centre rail system
The Fell centre rail system is a historic railway technology that uses an additional central rail and special gripping wheels to provide extra traction and braking on steep gradients.
E486590 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: Fell centre rail system | Statement: [Snaefell Mountain Railway, rackSystem, Fell centre rail system]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Fell centre rail system
Context triple: [Snaefell Mountain Railway, rackSystem, Fell centre rail system]
  • A. ExpressRail system
    The ExpressRail system is a dedicated on-dock rail network at the Port of New York and New Jersey that moves containerized cargo efficiently between marine terminals and inland destinations.
  • B. 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.
  • C. RTA Marine transport system
    The RTA Marine transport system is Dubai’s government-operated network of water-based public transit services, including water buses, abras, and water taxis, that connect key locations along the city’s waterways.
  • D. Harold Interlocking
    Harold Interlocking is a major and complex railroad junction in Queens, New York, that serves as a key convergence point for Long Island Rail Road and Amtrak trains heading into and out of Penn Station.
  • E. Railtrack
    Railtrack was the former private owner and operator of most of Britain’s railway infrastructure, which was later replaced by the publicly owned Network Rail after financial and safety controversies.
  • 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: Fell centre rail system
Triple: [Snaefell Mountain Railway, rackSystem, Fell centre rail system]
Generated description
The Fell centre rail system is a historic railway technology that uses an additional central rail and special gripping wheels to provide extra traction and braking on steep gradients.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Fell centre rail system
Target entity description: The Fell centre rail system is a historic railway technology that uses an additional central rail and special gripping wheels to provide extra traction and braking on steep gradients.
  • A. ExpressRail system
    The ExpressRail system is a dedicated on-dock rail network at the Port of New York and New Jersey that moves containerized cargo efficiently between marine terminals and inland destinations.
  • B. 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.
  • C. RTA Marine transport system
    The RTA Marine transport system is Dubai’s government-operated network of water-based public transit services, including water buses, abras, and water taxis, that connect key locations along the city’s waterways.
  • D. Harold Interlocking
    Harold Interlocking is a major and complex railroad junction in Queens, New York, that serves as a key convergence point for Long Island Rail Road and Amtrak trains heading into and out of Penn Station.
  • E. Railtrack
    Railtrack was the former private owner and operator of most of Britain’s railway infrastructure, which was later replaced by the publicly owned Network Rail after financial and safety controversies.
  • 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_69bd4434acb8819086679dbeccc2fe54 completed March 20, 2026, 12:57 p.m.
NER Named-entity recognition batch_69bd732e0b848190858407920e7aefd0 completed March 20, 2026, 4:17 p.m.
NED1 Entity disambiguation (via context triple) batch_69be927500ec8190b4d87ef86469777d completed March 21, 2026, 12:43 p.m.
NEDg Description generation batch_69be942dac9c8190a5861ca0aaa44c90 completed March 21, 2026, 12:50 p.m.
NED2 Entity disambiguation (via description) batch_69be94a7e15481908f17feafb593b97b completed March 21, 2026, 12:52 p.m.
Created at: March 20, 2026, 1:35 p.m.