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.