Triple

T22353607
Position Surface form Disambiguated ID Type / Status
Subject Pinetown E552594 entity
Predicate railwayLine P848 FINISHED
Object Old Main Line between Durban and Pietermaritzburg
The Old Main Line between Durban and Pietermaritzburg is a historic South African railway route that once formed the primary rail connection between the coastal city of Durban and the inland city of Pietermaritzburg.
E1532020 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: Old Main Line between Durban and Pietermaritzburg | Statement: [Pinetown, railwayLine, Old Main Line between Durban and Pietermaritzburg]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Old Main Line between Durban and Pietermaritzburg
Context triple: [Pinetown, railwayLine, Old Main Line between Durban and Pietermaritzburg]
  • A. Johannesburg–Richards Bay line
    The Johannesburg–Richards Bay line is a major South African heavy-haul railway corridor that links the inland economic hub around Johannesburg with the deep-water port of Richards Bay, primarily for bulk freight such as coal.
  • B. Maputo railway line
    The Maputo railway line is a key rail route in southern Africa that connects inland regions to the Port of Maputo, facilitating regional trade and transport within the Maputo Corridor.
  • C. Johannesburg–Swaziland line
    The Johannesburg–Swaziland line is a railway route in southern Africa that connects Johannesburg in South Africa with Eswatini (formerly Swaziland), serving as an important corridor for regional transport and trade.
  • D. Cape Town–Bulawayo railway
    The Cape Town–Bulawayo railway is a major southern African rail line linking Cape Town in South Africa with Bulawayo in Zimbabwe, historically significant as a key north–south transport corridor.
  • E. Mabopane Station corridor
    The Mabopane Station corridor is a major public transport route and activity spine in the northern Pretoria region of South Africa, linking townships such as Soshanguve to the Mabopane railway station and surrounding economic hubs.
  • 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: Old Main Line between Durban and Pietermaritzburg
Triple: [Pinetown, railwayLine, Old Main Line between Durban and Pietermaritzburg]
Generated description
The Old Main Line between Durban and Pietermaritzburg is a historic South African railway route that once formed the primary rail connection between the coastal city of Durban and the inland city of Pietermaritzburg.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Old Main Line between Durban and Pietermaritzburg
Target entity description: The Old Main Line between Durban and Pietermaritzburg is a historic South African railway route that once formed the primary rail connection between the coastal city of Durban and the inland city of Pietermaritzburg.
  • A. Johannesburg–Richards Bay line
    The Johannesburg–Richards Bay line is a major South African heavy-haul railway corridor that links the inland economic hub around Johannesburg with the deep-water port of Richards Bay, primarily for bulk freight such as coal.
  • B. Maputo railway line
    The Maputo railway line is a key rail route in southern Africa that connects inland regions to the Port of Maputo, facilitating regional trade and transport within the Maputo Corridor.
  • C. Johannesburg–Swaziland line
    The Johannesburg–Swaziland line is a railway route in southern Africa that connects Johannesburg in South Africa with Eswatini (formerly Swaziland), serving as an important corridor for regional transport and trade.
  • D. Cape Town–Bulawayo railway
    The Cape Town–Bulawayo railway is a major southern African rail line linking Cape Town in South Africa with Bulawayo in Zimbabwe, historically significant as a key north–south transport corridor.
  • E. Mabopane Station corridor
    The Mabopane Station corridor is a major public transport route and activity spine in the northern Pretoria region of South Africa, linking townships such as Soshanguve to the Mabopane railway station and surrounding economic hubs.
  • 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_69e11e4a0ad08190a385b4d343cf6524 completed April 16, 2026, 5:37 p.m.
NER Named-entity recognition batch_69f157cd934c8190b9d60805e24ae6a6 completed April 29, 2026, 12:58 a.m.
NED1 Entity disambiguation (via context triple) batch_6a0ae05c2bd4819086f51f6cb64f59c4 completed May 18, 2026, 9:48 a.m.
NEDg Description generation batch_6a0ae1285bc88190a0d4eb0672f562ff completed May 18, 2026, 9:51 a.m.
NED2 Entity disambiguation (via description) batch_6a0ae1913ccc8190b6ad98b8df636153 completed May 18, 2026, 9:53 a.m.
Created at: April 16, 2026, 8:44 p.m.