Triple

T5014771
Position Surface form Disambiguated ID Type / Status
Subject Snaefell Mountain Railway E112712 entity
Predicate operator P179 FINISHED
Object Isle of Man Railways
Isle of Man Railways is the government-owned organization that operates the Isle of Man’s historic narrow-gauge steam and electric railway network.
 E206448 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: Isle of Man Railways | Statement: [Snaefell Mountain Railway, operator, Isle of Man Railways]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Isle of Man Railways
Context triple: [Snaefell Mountain Railway, operator, Isle of Man Railways]
  • A. Isle of Man Railway
    The Isle of Man Railway is a historic narrow-gauge steam railway system on the Isle of Man that operates as a major heritage and tourist attraction.
  • B. Manx Electric Railway
    The Manx Electric Railway is a historic electric tramway on the Isle of Man that runs along the island’s east coast between Douglas and Ramsey, offering scenic coastal transport with vintage rolling stock.
  • C. Taff Vale Railway
    Taff Vale Railway was a historic Welsh railway company that played a key role in transporting coal and passengers in South Wales during the 19th and early 20th centuries.
  • D. Cambrian Heritage Railways
    Cambrian Heritage Railways is a preserved heritage railway in Shropshire, England, dedicated to restoring and operating former Cambrian Railways lines and rolling stock for historical and tourist purposes.
  • E. Tauber Valley Railway
    The Tauber Valley Railway is a regional rail line in southern Germany that runs through the scenic Tauber River valley, connecting towns such as Bad Mergentheim and serving both local transport and tourism.
  • 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: Isle of Man Railways
Triple: [Snaefell Mountain Railway, operator, Isle of Man Railways]
Generated description
Isle of Man Railways is the government-owned organization that operates the Isle of Man’s historic narrow-gauge steam and electric railway network.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Isle of Man Railways
Target entity description: Isle of Man Railways is the government-owned organization that operates the Isle of Man’s historic narrow-gauge steam and electric railway network.
  • A. Isle of Man Railway chosen
    The Isle of Man Railway is a historic narrow-gauge steam railway system on the Isle of Man that operates as a major heritage and tourist attraction.
  • B. Manx Electric Railway
    The Manx Electric Railway is a historic electric tramway on the Isle of Man that runs along the island’s east coast between Douglas and Ramsey, offering scenic coastal transport with vintage rolling stock.
  • C. Taff Vale Railway
    Taff Vale Railway was a historic Welsh railway company that played a key role in transporting coal and passengers in South Wales during the 19th and early 20th centuries.
  • D. Cambrian Heritage Railways
    Cambrian Heritage Railways is a preserved heritage railway in Shropshire, England, dedicated to restoring and operating former Cambrian Railways lines and rolling stock for historical and tourist purposes.
  • E. Tauber Valley Railway
    The Tauber Valley Railway is a regional rail line in southern Germany that runs through the scenic Tauber River valley, connecting towns such as Bad Mergentheim and serving both local transport and tourism.
  • 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_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.