Triple
T19397021
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Colindale Underground station |
E485217
|
entity |
| Predicate | openedBy |
P421
|
FINISHED |
| Object | London Electric Railway |
—
|
NE NERFINISHED |
How this triple was built (3 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 Electric Railway | Statement: [Colindale Underground station, openedBy, London Electric Railway]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: London Electric Railway Context triple: [Colindale Underground station, openedBy, London Electric Railway]
-
A.
Underground Electric Railways Company of London
The Underground Electric Railways Company of London was the early 20th-century holding company that developed and operated much of London's deep-level tube network, forming the core of what became the London Underground.
-
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.
United Railways and Electric Company
United Railways and Electric Company was a major early 20th-century streetcar and electric transit operator in Baltimore, Maryland, that formed the backbone of the city’s public transportation system before its successor companies.
-
E.
Great Northern, Piccadilly and Brompton Railway
The Great Northern, Piccadilly and Brompton Railway was an early 20th-century deep-level London Underground railway company that formed the core of what is now the Piccadilly line.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: London Electric Railway Target entity description: London Electric Railway was an early 20th-century underground railway company in London that developed and operated several key lines of what is now the London Underground network.
-
A.
Underground Electric Railways Company of London
The Underground Electric Railways Company of London was the early 20th-century holding company that developed and operated much of London's deep-level tube network, forming the core of what became the London Underground.
-
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.
United Railways and Electric Company
United Railways and Electric Company was a major early 20th-century streetcar and electric transit operator in Baltimore, Maryland, that formed the backbone of the city’s public transportation system before its successor companies.
-
E.
Great Northern, Piccadilly and Brompton Railway
The Great Northern, Piccadilly and Brompton Railway was an early 20th-century deep-level London Underground railway company that formed the core of what is now the Piccadilly line.
- F. None of above. chosen
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_69d8e8d5162481909db12435d9535c1a |
completed | April 10, 2026, 12:11 p.m. |
| NER | Named-entity recognition | batch_69e62573f5788190a635b92121db2cf7 |
completed | April 20, 2026, 1:09 p.m. |
Created at: April 10, 2026, 1:36 p.m.