Triple

T19145212
Position Surface form Disambiguated ID Type / Status
Subject Ngaoundéré E468660 entity
Predicate railwayTerminusOf P21210 FINISHED
Object Camrail northern line
The Camrail northern line is a major railway route in Cameroon that connects the northern city of Ngaoundéré with the country’s southern rail network, facilitating passenger and freight transport across the region.
E1360720 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: Camrail northern line | Statement: [Ngaoundéré, railwayTerminusOf, Camrail northern line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Camrail northern line
Context triple: [Ngaoundéré, railwayTerminusOf, Camrail northern line]
  • A. Northumberland Line
    The Northumberland Line is a passenger rail route in North East England being reopened to connect communities such as Ashington with Newcastle and the wider rail network.
  • B. Newcastle Line
    The Newcastle Line is a suburban and intercity railway corridor in New South Wales, Australia, serving the city of Newcastle and connecting it with surrounding regions.
  • C. Midland Line
    The Midland Line is a scenic New Zealand railway route across the South Island, best known today for carrying the TranzAlpine passenger service between Christchurch and Greymouth through the Southern Alps.
  • D. North East railway line
    The North East railway line is a key rail corridor in Victoria, Australia, connecting Melbourne with the state’s northeast region and forming part of the main interstate route to Sydney.
  • E. North–South Railway
    The North–South Railway is Vietnam’s principal rail line, running the length of the country and connecting major cities from Hanoi to Ho Chi Minh City.
  • 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: Camrail northern line
Triple: [Ngaoundéré, railwayTerminusOf, Camrail northern line]
Generated description
The Camrail northern line is a major railway route in Cameroon that connects the northern city of Ngaoundéré with the country’s southern rail network, facilitating passenger and freight transport across the region.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Camrail northern line
Target entity description: The Camrail northern line is a major railway route in Cameroon that connects the northern city of Ngaoundéré with the country’s southern rail network, facilitating passenger and freight transport across the region.
  • A. Northumberland Line
    The Northumberland Line is a passenger rail route in North East England being reopened to connect communities such as Ashington with Newcastle and the wider rail network.
  • B. Newcastle Line
    The Newcastle Line is a suburban and intercity railway corridor in New South Wales, Australia, serving the city of Newcastle and connecting it with surrounding regions.
  • C. Midland Line
    The Midland Line is a scenic New Zealand railway route across the South Island, best known today for carrying the TranzAlpine passenger service between Christchurch and Greymouth through the Southern Alps.
  • D. North East railway line
    The North East railway line is a key rail corridor in Victoria, Australia, connecting Melbourne with the state’s northeast region and forming part of the main interstate route to Sydney.
  • E. North–South Railway
    The North–South Railway is Vietnam’s principal rail line, running the length of the country and connecting major cities from Hanoi to Ho Chi Minh City.
  • 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_69d8dd084ff48190ac0f8c46ee722629 completed April 10, 2026, 11:20 a.m.
NER Named-entity recognition batch_69e5e978b0b481909a531efa030c5def completed April 20, 2026, 8:53 a.m.
NED1 Entity disambiguation (via context triple) batch_6a06f24e34c4819090954c2b79ab20bb completed May 15, 2026, 10:15 a.m.
NEDg Description generation batch_6a06f366e514819080de839bdde22fc2 completed May 15, 2026, 10:20 a.m.
NED2 Entity disambiguation (via description) batch_6a06f4039ca881908679e5da604eea50 completed May 15, 2026, 10:22 a.m.
Created at: April 10, 2026, 12:06 p.m.