Triple
T21061190
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Holborn Viaduct station |
E518849
|
entity |
| Predicate | builtFor |
P1261
|
FINISHED |
| Object | London, Chatham and Dover Railway City extension |
—
|
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, Chatham and Dover Railway City extension | Statement: [Holborn Viaduct station, builtFor, London, Chatham and Dover Railway City extension]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: London, Chatham and Dover Railway City extension Context triple: [Holborn Viaduct station, builtFor, London, Chatham and Dover Railway City extension]
-
A.
London Chatham and Dover Railway
chosen
The London Chatham and Dover Railway was a 19th-century British railway company that operated routes in southeast England, including key lines into London.
-
B.
London Waterloo to Dorking line
The London Waterloo to Dorking line is a suburban railway route in South West London and Surrey that connects central London’s Waterloo station with the town of Dorking, serving intermediate commuter stations such as Stoneleigh.
-
C.
London and Greenwich Railway
The London and Greenwich Railway was one of the earliest passenger railways in London and the first in the capital to be built on a viaduct, forming a key part of the city's early rail infrastructure.
-
D.
London and Southampton Railway
The London and Southampton Railway was an early 19th-century British railway company that built and operated the main line linking London with the port city of Southampton.
-
E.
Maidstone East Line
The Maidstone East Line is a railway route in Kent, England, connecting London with Maidstone and Ashford and serving several intermediate towns and villages.
- 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_69e0b505ef108190b25dd4033e2ff7eb |
completed | April 16, 2026, 10:08 a.m. |
| NER | Named-entity recognition | batch_69e6feaf3edc81909423e039cac6bd87 |
completed | April 21, 2026, 4:35 a.m. |
Created at: April 16, 2026, 2:38 p.m.