Triple
T2790320
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Northern line |
E61912
|
entity |
| Predicate | formerName |
P65
|
FINISHED |
| Object |
Charing Cross, Euston and Hampstead Railway
The Charing Cross, Euston and Hampstead Railway was an early deep-level “tube” railway in London that later became a core part of the London Underground’s Northern line.
|
E298519
|
NE FINISHED |
How this triple was built (4 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: Charing Cross, Euston and Hampstead Railway | Statement: [Northern line, formerName, Charing Cross, Euston and Hampstead Railway]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Charing Cross, Euston and Hampstead Railway Context triple: [Northern line, formerName, Charing Cross, Euston and Hampstead Railway]
-
A.
North London Railway
The North London Railway was a British railway company that operated suburban and freight services across north London during the 19th and early 20th centuries.
-
B.
Central London Railway
Central London Railway was an early deep-level underground railway in London that later became the core of the London Underground's Central line.
-
C.
Metropolitan Railway
The Metropolitan Railway was the pioneering underground railway in London and the world’s first urban underground passenger railway, forming the core of what became the London Underground.
-
D.
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.
-
E.
Snow Hill Lines
Snow Hill Lines is a network of suburban and regional railway routes in the West Midlands, England, centered on Birmingham Snow Hill station.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Charing Cross, Euston and Hampstead Railway Triple: [Northern line, formerName, Charing Cross, Euston and Hampstead Railway]
Generated description
The Charing Cross, Euston and Hampstead Railway was an early deep-level “tube” railway in London that later became a core part of the London Underground’s Northern line.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Charing Cross, Euston and Hampstead Railway Target entity description: The Charing Cross, Euston and Hampstead Railway was an early deep-level “tube” railway in London that later became a core part of the London Underground’s Northern line.
-
A.
North London Railway
The North London Railway was a British railway company that operated suburban and freight services across north London during the 19th and early 20th centuries.
-
B.
Central London Railway
Central London Railway was an early deep-level underground railway in London that later became the core of the London Underground's Central line.
-
C.
Metropolitan Railway
The Metropolitan Railway was the pioneering underground railway in London and the world’s first urban underground passenger railway, forming the core of what became the London Underground.
-
D.
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.
-
E.
Snow Hill Lines
Snow Hill Lines is a network of suburban and regional railway routes in the West Midlands, England, centered on Birmingham Snow Hill station.
- F. None of above. chosen
Provenance (5 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_69ab4b7f51d881908768300ebd2fbdae |
completed | March 6, 2026, 9:47 p.m. |
| NER | Named-entity recognition | batch_69abddb4ef3081909122840a357801bf |
completed | March 7, 2026, 8:11 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69afc65c1f848190b6efeefb64a3e131 |
completed | March 10, 2026, 7:21 a.m. |
| NEDg | Description generation | batch_69afc6e6d4bc81908108fe24677448c3 |
completed | March 10, 2026, 7:23 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69afc7907be88190b70458ed735261e8 |
completed | March 10, 2026, 7:26 a.m. |
Created at: March 6, 2026, 9:58 p.m.