Triple
T6237298
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | South African national rail network |
E139507
|
entity |
| Predicate | gauge |
P391
|
FINISHED |
| Object | Cape gauge |
E253832
|
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: Cape gauge | Statement: [South African national rail network, gauge, Cape gauge]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Cape gauge Context triple: [South African national rail network, gauge, Cape gauge]
-
A.
Cape gauge
chosen
Cape gauge is a narrow railway track gauge of 3 feet 6 inches (1,067 mm) widely used in southern Africa and other parts of the world for mainline and regional railways.
-
B.
Gage
Gage is a surname of English origin borne by various notable individuals, including historical and contemporary figures.
-
C.
Irish gauge
Irish gauge is a broad railway track gauge of 5 ft 3 in (1,600 mm) widely used on railways in Ireland and parts of Australia and Brazil.
-
D.
Pennsylvania trolley gauge
The Pennsylvania trolley gauge is a non-standard, wider-than-standard track gauge historically used by many streetcar and trolley systems in Pennsylvania, notably in the Philadelphia area.
-
E.
Iberian gauge
Iberian gauge is a broad railway track gauge, wider than the international standard gauge, predominantly used on mainline railways in Spain and Portugal.
- 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_69c008b0e7ac8190808a59573ee646f3 |
completed | March 22, 2026, 3:20 p.m. |
| NER | Named-entity recognition | batch_69c063021258819093a9237041816638 |
completed | March 22, 2026, 9:45 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c20dfbf42c8190842a471db4ff3de0 |
completed | March 24, 2026, 4:07 a.m. |
Created at: March 22, 2026, 4:23 p.m.