Triple
T21391194
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Old Street station |
E527652
|
entity |
| Predicate | hasInterchange |
P3495
|
FINISHED |
| Object | London Underground – National Rail |
—
|
NE NERFINISHED |
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: London Underground – National Rail | Statement: [Old Street station, hasInterchange, London Underground – National Rail]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: London Underground – National Rail Context triple: [Old Street station, hasInterchange, London Underground – National Rail]
-
A.
London Underground and National Rail
chosen
London Underground and National Rail together form the integrated urban metro and nationwide mainline rail services that constitute the core of passenger rail transport in London and across Great Britain.
-
B.
London Underground and Elizabeth line
The London Underground and Elizabeth line are major rail networks in London, with the former being the city’s historic metro system and the latter a modern high-capacity cross-city railway.
-
C.
London Underground
The London Underground is a rapid transit system serving Greater London and surrounding areas, famous as one of the world's oldest and most extensive metro networks.
-
D.
London Overground
London Overground is a suburban rail network in London that connects outer districts and some central hubs using a mix of newly built and former National Rail lines, integrated into the city’s public transport system.
-
E.
TfL Rail services
TfL Rail services were the interim commuter rail operations in London and the surrounding area that preceded and were later integrated into the full Elizabeth line network.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (2 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_69e0b51ff3748190935c0a513c62a12b |
completed | April 16, 2026, 10:08 a.m. |
| NER | Named-entity recognition | batch_69e8b113690c81909c0a378fddba5d3a |
completed | April 22, 2026, 11:29 a.m. |
Created at: April 16, 2026, 5:13 p.m.