Triple

T13543363
Position Surface form Disambiguated ID Type / Status
Subject Midrand station E323446 entity
Predicate isOnCorridor P1018 FINISHED
Object Johannesburg–Pretoria high‑speed corridor
The Johannesburg–Pretoria high-speed corridor is a major rapid-rail link in South Africa that connects the economic hubs of Johannesburg and Pretoria as part of the Gautrain system.
E1053341 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: Johannesburg–Pretoria high‑speed corridor | Statement: [Midrand station, isOnCorridor, Johannesburg–Pretoria high‑speed corridor]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Johannesburg–Pretoria high‑speed corridor
Context triple: [Midrand station, isOnCorridor, Johannesburg–Pretoria high‑speed corridor]
  • A. Durban–Johannesburg corridor
    The Durban–Johannesburg corridor is a major South African transport and economic artery linking the coastal port city of Durban with the inland metropolis of Johannesburg.
  • B. Johannesburg Ring Road
    The Johannesburg Ring Road is a network of freeways encircling Johannesburg, South Africa, that facilitates high-volume traffic flow around the city and connects major national routes.
  • C. KwaDukuza–Durban corridor
    The KwaDukuza–Durban corridor is a rapidly developing coastal economic and transport belt in KwaZulu-Natal, South Africa, linking the city of Durban with the town of KwaDukuza through urban, industrial, and residential growth.
  • D. Gaborone–Johannesburg route
    The Gaborone–Johannesburg route is a major regional transport corridor linking Botswana’s capital Gaborone with South Africa’s economic hub Johannesburg, facilitating significant cross-border trade and travel.
  • E. Cape to Cairo Road corridor
    The Cape to Cairo Road corridor is a proposed trans-African highway route intended to link South Africa’s Cape Town with Egypt’s Cairo, facilitating regional connectivity and trade across the continent.
  • 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: Johannesburg–Pretoria high‑speed corridor
Triple: [Midrand station, isOnCorridor, Johannesburg–Pretoria high‑speed corridor]
Generated description
The Johannesburg–Pretoria high-speed corridor is a major rapid-rail link in South Africa that connects the economic hubs of Johannesburg and Pretoria as part of the Gautrain system.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Johannesburg–Pretoria high‑speed corridor
Target entity description: The Johannesburg–Pretoria high-speed corridor is a major rapid-rail link in South Africa that connects the economic hubs of Johannesburg and Pretoria as part of the Gautrain system.
  • A. Durban–Johannesburg corridor
    The Durban–Johannesburg corridor is a major South African transport and economic artery linking the coastal port city of Durban with the inland metropolis of Johannesburg.
  • B. Johannesburg Ring Road
    The Johannesburg Ring Road is a network of freeways encircling Johannesburg, South Africa, that facilitates high-volume traffic flow around the city and connects major national routes.
  • C. KwaDukuza–Durban corridor
    The KwaDukuza–Durban corridor is a rapidly developing coastal economic and transport belt in KwaZulu-Natal, South Africa, linking the city of Durban with the town of KwaDukuza through urban, industrial, and residential growth.
  • D. Gaborone–Johannesburg route
    The Gaborone–Johannesburg route is a major regional transport corridor linking Botswana’s capital Gaborone with South Africa’s economic hub Johannesburg, facilitating significant cross-border trade and travel.
  • E. Cape to Cairo Road corridor
    The Cape to Cairo Road corridor is a proposed trans-African highway route intended to link South Africa’s Cape Town with Egypt’s Cairo, facilitating regional connectivity and trade across the continent.
  • 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_69d8076776248190bdf0d4fa1f85a5fc completed April 9, 2026, 8:09 p.m.
NER Named-entity recognition batch_69dbafda36248190acabde65a88c5471 completed April 12, 2026, 2:44 p.m.
NED1 Entity disambiguation (via context triple) batch_69f78adaf62c8190855df932eb9830be completed May 3, 2026, 5:50 p.m.
NEDg Description generation batch_69f78cdf1a74819087b0370060ddfa99 completed May 3, 2026, 5:58 p.m.
NED2 Entity disambiguation (via description) batch_69f78e00007c81909007a751fd4625c2 completed May 3, 2026, 6:03 p.m.
Created at: April 9, 2026, 9:45 p.m.