Triple
T474794
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | London Underground |
E9036
|
entity |
| Predicate | hasPart |
P35
|
FINISHED |
| Object |
Piccadilly line
The Piccadilly line is a major deep-level London Underground route running from the north and west suburbs through central London, serving key destinations including Heathrow Airport.
|
E62557
|
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: Piccadilly line | Statement: [London Underground, hasPart, Piccadilly line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Piccadilly line Context triple: [London Underground, hasPart, Piccadilly line]
-
A.
Bakerloo line
The Bakerloo line is a deep-level London Underground railway line running between Harrow & Wealdstone in northwest London and Elephant & Castle in south London, known for serving key central locations such as Baker Street, Oxford Circus, and Waterloo.
-
B.
Northern line
The Northern line is a major London Underground route running north–south across the city, serving key central and suburban areas.
-
C.
Hammersmith & City line
The Hammersmith & City line is a London Underground service running across west and central London, linking Hammersmith to Barking via key hubs such as Paddington, King's Cross St Pancras, and Liverpool Street.
-
D.
Metropolitan line
The Metropolitan line is one of the oldest lines of the London Underground, running from central London into the northwestern suburbs and beyond.
-
E.
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.
- 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: Piccadilly line Triple: [London Underground, hasPart, Piccadilly line]
Generated description
The Piccadilly line is a major deep-level London Underground route running from the north and west suburbs through central London, serving key destinations including Heathrow Airport.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Piccadilly line Target entity description: The Piccadilly line is a major deep-level London Underground route running from the north and west suburbs through central London, serving key destinations including Heathrow Airport.
-
A.
Bakerloo line
The Bakerloo line is a deep-level London Underground railway line running between Harrow & Wealdstone in northwest London and Elephant & Castle in south London, known for serving key central locations such as Baker Street, Oxford Circus, and Waterloo.
-
B.
Northern line
The Northern line is a major London Underground route running north–south across the city, serving key central and suburban areas.
-
C.
Hammersmith & City line
The Hammersmith & City line is a London Underground service running across west and central London, linking Hammersmith to Barking via key hubs such as Paddington, King's Cross St Pancras, and Liverpool Street.
-
D.
Metropolitan line
The Metropolitan line is one of the oldest lines of the London Underground, running from central London into the northwestern suburbs and beyond.
-
E.
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.
- 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_69a2e7ff81708190b0507a24a997232c |
completed | Feb. 28, 2026, 1:05 p.m. |
| NER | Named-entity recognition | batch_69a2f039f3d88190a7c93ecbf1bf5f58 |
completed | Feb. 28, 2026, 1:40 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a48540a8048190a36c6560d2d51538 |
completed | March 1, 2026, 6:28 p.m. |
| NEDg | Description generation | batch_69a485e1ccac819088880d0587c04791 |
completed | March 1, 2026, 6:30 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69a48638cbe481909dd39f8926544985 |
completed | March 1, 2026, 6:32 p.m. |
Created at: Feb. 28, 2026, 1:12 p.m.