Triple
T2711233
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Roodepoort |
E59864
|
entity |
| Predicate | transport |
P230
|
FINISHED |
| Object | Metrorail Gauteng services |
E161655
|
NE FINISHED |
How this triple was built (2 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: Metrorail Gauteng services | Statement: [Roodepoort, transport, Metrorail Gauteng services]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Metrorail Gauteng services Context triple: [Roodepoort, transport, Metrorail Gauteng services]
-
A.
Metrorail Gauteng commuter rail
chosen
Metrorail Gauteng commuter rail is a regional passenger rail service in South Africa’s Gauteng province that connects major urban areas and townships, including Soweto, with central business districts.
-
B.
East London line
The East London line is a key London Overground route running through east and south London, connecting areas such as Highbury & Islington, Shoreditch, Whitechapel, and Croydon.
-
C.
Gautrain
Gautrain is a high-speed commuter rail system in Gauteng, South Africa, linking major urban centers and key locations such as airports and business districts.
-
D.
Metro Rail
Metro Rail is the urban rapid transit rail system serving Los Angeles County, providing light rail and subway services across the region.
-
E.
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.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69ab4ac92a088190bc74bca14038e3de |
completed | March 6, 2026, 9:44 p.m. |
| NER | Named-entity recognition | batch_69abda78c4f08190bb1217f08198c4cc |
completed | March 7, 2026, 7:57 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69afaf820e6c8190bc37219eadd57e86 |
completed | March 10, 2026, 5:43 a.m. |
Created at: March 6, 2026, 9:55 p.m.