Triple
T21061178
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Holborn Viaduct station |
E518849
|
entity |
| Predicate | connectedTo |
P37
|
FINISHED |
| Object | Snow Hill tunnel |
—
|
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: Snow Hill tunnel | Statement: [Holborn Viaduct station, connectedTo, Snow Hill tunnel]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Snow Hill tunnel Context triple: [Holborn Viaduct station, connectedTo, Snow Hill tunnel]
-
A.
Primrose Hill Tunnel
Primrose Hill Tunnel is a historic railway tunnel in London that formed part of the early main line route of the London and Birmingham Railway.
-
B.
Rotherhithe Tunnel
Rotherhithe Tunnel is a road tunnel beneath the River Thames in London, linking the areas of Rotherhithe and Limehouse.
-
C.
Limehouse Link Tunnel
The Limehouse Link Tunnel is a major road tunnel in East London that provides a key underground route between the City and Docklands, easing traffic flow to and from Canary Wharf.
-
D.
North Downs Tunnel
North Downs Tunnel is a major railway tunnel in southeast England that carries High Speed 1 beneath the North Downs hills.
-
E.
City Tunnel No. 1
City Tunnel No. 1 is a major New York City water supply tunnel that conveys drinking water from upstate reservoirs into the city’s distribution system.
- 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: Snow Hill tunnel Target entity description: Snow Hill tunnel is a historic railway tunnel in central London that carries trains beneath the city between the north–south main lines.
-
A.
Primrose Hill Tunnel
Primrose Hill Tunnel is a historic railway tunnel in London that formed part of the early main line route of the London and Birmingham Railway.
-
B.
Rotherhithe Tunnel
Rotherhithe Tunnel is a road tunnel beneath the River Thames in London, linking the areas of Rotherhithe and Limehouse.
-
C.
Limehouse Link Tunnel
The Limehouse Link Tunnel is a major road tunnel in East London that provides a key underground route between the City and Docklands, easing traffic flow to and from Canary Wharf.
-
D.
North Downs Tunnel
North Downs Tunnel is a major railway tunnel in southeast England that carries High Speed 1 beneath the North Downs hills.
-
E.
City Tunnel No. 1
City Tunnel No. 1 is a major New York City water supply tunnel that conveys drinking water from upstate reservoirs into the city’s distribution system.
- 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_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.