Triple
T11257744
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Centurion Gautrain station |
E266481
|
entity |
| Predicate | railwayLine |
P848
|
FINISHED |
| Object | Gautrain North-South line |
E266498
|
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: Gautrain North-South line | Statement: [Centurion Gautrain station, railwayLine, Gautrain North-South line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Gautrain North-South line Context triple: [Centurion Gautrain station, railwayLine, Gautrain North-South line]
-
A.
Gautrain
chosen
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.
-
B.
Nairobi commuter rail network
The Nairobi commuter rail network is a suburban passenger rail system serving Nairobi and its surrounding metropolitan areas, aimed at easing urban congestion and improving daily transit for commuters.
-
C.
Metro Busway
Metro Busway is Los Angeles County’s network of high-capacity, bus rapid transit corridors designed to provide faster, more reliable service than regular local bus lines.
-
D.
Metrorail Gauteng commuter rail
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.
-
E.
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.
- 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_69d6aac7953c8190b82caf9d7640fdf9 |
completed | April 8, 2026, 7:21 p.m. |
| NER | Named-entity recognition | batch_69d7e935b85c819085e1abf2dd4099c5 |
completed | April 9, 2026, 6 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69e5257dd1e48190a9352fc8b62418da |
completed | April 19, 2026, 6:57 p.m. |
Created at: April 8, 2026, 9:31 p.m.