Triple
T16470263
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Northern Ireland railways |
E400040
|
entity |
| Predicate | hasRollingStockClass |
P5426
|
FINISHED |
| Object | Class 4000 DMU |
E1028231
|
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: Class 4000 DMU | Statement: [Northern Ireland railways, hasRollingStockClass, Class 4000 DMU]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Class 4000 DMU Context triple: [Northern Ireland railways, hasRollingStockClass, Class 4000 DMU]
-
A.
Class 4000 DMU
chosen
The Class 4000 DMU is a modern diesel multiple unit train operated by Northern Ireland Railways for passenger services, particularly on routes around Belfast.
-
B.
Class 3000 DMU
The Class 3000 DMU is a fleet of modern diesel multiple-unit passenger trains operated by Northern Ireland Railways, primarily used on regional and suburban services.
-
C.
Class 170 diesel multiple unit
The Class 170 diesel multiple unit is a British Turbostar family regional train used extensively for passenger services across the UK rail network.
-
D.
Class 196 diesel multiple unit
The Class 196 diesel multiple unit is a modern British regional train operated by West Midlands Railway, designed for medium-distance services with improved performance, accessibility, and passenger comfort.
-
E.
Class 150 diesel multiple unit
The Class 150 diesel multiple unit is a British two- or three-car regional passenger train introduced in the 1980s and widely used on local and suburban services across the UK rail network.
- 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_69d87f2dac988190b74d6e185fa88ba4 |
completed | April 10, 2026, 4:40 a.m. |
| NER | Named-entity recognition | batch_69e32dcfed6c8190b8dbe4b65b0ab817 |
completed | April 18, 2026, 7:08 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a00581c24508190b4888357828fed80 |
completed | May 10, 2026, 10:04 a.m. |
Created at: April 10, 2026, 5:11 a.m.