Triple
T6524418
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Confederation Line |
E151265
|
entity |
| Predicate | usesTunnel |
P18707
|
FINISHED |
| Object |
Downtown Ottawa tunnel
The Downtown Ottawa tunnel is an underground light rail transit tunnel beneath Ottawa’s downtown core that carries the city’s Confederation Line.
|
E605070
|
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: Downtown Ottawa tunnel | Statement: [Confederation Line, usesTunnel, Downtown Ottawa tunnel]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Downtown Ottawa tunnel Context triple: [Confederation Line, usesTunnel, Downtown Ottawa tunnel]
-
A.
Queensway Tunnel
The Queensway Tunnel is a road tunnel in northwest England that carries vehicular traffic beneath the River Mersey between Liverpool and the Wirral Peninsula.
-
B.
Downtown Tunnel
The Downtown Tunnel is a major underwater vehicular tunnel in the Hampton Roads region that carries traffic beneath the Elizabeth River between Norfolk and Portsmouth, Virginia.
-
C.
Brockville Railway Tunnel
The Brockville Railway Tunnel is Canada's oldest railway tunnel, a historic 19th-century stone passage beneath downtown Brockville that now serves as a popular illuminated pedestrian attraction.
-
D.
Montague Street Tunnel
The Montague Street Tunnel is a New York City Subway tunnel under the East River that carries trains between Manhattan and Brooklyn.
-
E.
Prudential Tunnel
Prudential Tunnel is a vehicular tunnel in Boston, Massachusetts, that carries traffic beneath the Prudential Center complex as part of the Massachusetts Turnpike.
- 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: Downtown Ottawa tunnel Triple: [Confederation Line, usesTunnel, Downtown Ottawa tunnel]
Generated description
The Downtown Ottawa tunnel is an underground light rail transit tunnel beneath Ottawa’s downtown core that carries the city’s Confederation Line.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Downtown Ottawa tunnel Target entity description: The Downtown Ottawa tunnel is an underground light rail transit tunnel beneath Ottawa’s downtown core that carries the city’s Confederation Line.
-
A.
Queensway Tunnel
The Queensway Tunnel is a road tunnel in northwest England that carries vehicular traffic beneath the River Mersey between Liverpool and the Wirral Peninsula.
-
B.
Downtown Tunnel
The Downtown Tunnel is a major underwater vehicular tunnel in the Hampton Roads region that carries traffic beneath the Elizabeth River between Norfolk and Portsmouth, Virginia.
-
C.
Brockville Railway Tunnel
The Brockville Railway Tunnel is Canada's oldest railway tunnel, a historic 19th-century stone passage beneath downtown Brockville that now serves as a popular illuminated pedestrian attraction.
-
D.
Montague Street Tunnel
The Montague Street Tunnel is a New York City Subway tunnel under the East River that carries trains between Manhattan and Brooklyn.
-
E.
Prudential Tunnel
Prudential Tunnel is a vehicular tunnel in Boston, Massachusetts, that carries traffic beneath the Prudential Center complex as part of the Massachusetts Turnpike.
- 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_69c687f522748190b3058405553cdabd |
completed | March 27, 2026, 1:36 p.m. |
| NER | Named-entity recognition | batch_69c6ad9831f88190a2b64cf6bc8c9a11 |
completed | March 27, 2026, 4:17 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c6d52372d08190a98c611dabc27c85 |
completed | March 27, 2026, 7:06 p.m. |
| NEDg | Description generation | batch_69c6d6d9af148190ad9cd2cc31a70bb7 |
completed | March 27, 2026, 7:13 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69c6d98506b88190aae3b4d887744648 |
completed | March 27, 2026, 7:24 p.m. |
Created at: March 27, 2026, 1:45 p.m.