Triple
T16723240
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Airport–South Hylton line |
E406400
|
entity |
| Predicate | usesRollingStock |
P5426
|
FINISHED |
| Object | Tyne and Wear Metro Class 994 (Metrocars) |
E420769
|
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: Tyne and Wear Metro Class 994 (Metrocars) | Statement: [Airport–South Hylton line, usesRollingStock, Tyne and Wear Metro Class 994 (Metrocars)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Tyne and Wear Metro Class 994 (Metrocars) Context triple: [Airport–South Hylton line, usesRollingStock, Tyne and Wear Metro Class 994 (Metrocars)]
-
A.
Tyne and Wear Metro Class 994 units
chosen
The Tyne and Wear Metro Class 994 units are electric multiple-unit trains specifically built for and operated on the Tyne and Wear Metro light rail system in North East England.
-
B.
Bombardier Flexity Freedom LRVs
Bombardier Flexity Freedom LRVs are a class of modern low-floor light rail vehicles designed by Bombardier for urban transit systems in North America.
-
C.
Siemens U2 LRVs
Siemens U2 LRVs are a series of high-floor light rail vehicles built by Siemens for urban transit systems, widely used in early North American and European light rail networks.
-
D.
London Overground Class 378 trains
London Overground Class 378 trains are electric multiple units used on the London Overground network, designed for high-capacity, metro-style suburban passenger services.
-
E.
Tyne and Wear Metro
Tyne and Wear Metro is a light rail rapid transit system serving Newcastle upon Tyne, Sunderland, and surrounding areas in North East England.
- 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_69d8838f242881908abd8bc138795886 |
completed | April 10, 2026, 4:58 a.m. |
| NER | Named-entity recognition | batch_69e387449eb08190b174f8e142ea631b |
completed | April 18, 2026, 1:29 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a00a518019881909a7c5ef344966579 |
completed | May 10, 2026, 3:32 p.m. |
Created at: April 10, 2026, 5:20 a.m.