Triple
T20179231
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Chicago–Twin Cities route |
E492680
|
entity |
| Predicate | servedByNamedTrain |
P138983
|
FINISHED |
| Object | North Western Limited |
—
|
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: North Western Limited | Statement: [Chicago–Twin Cities route, servedByNamedTrain, North Western Limited]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: North Western Limited Context triple: [Chicago–Twin Cities route, servedByNamedTrain, North Western Limited]
-
A.
North Coast Limited
The North Coast Limited was a premier transcontinental passenger train that ran between Chicago and the Pacific Northwest, renowned for its scenic route and luxury service.
-
B.
Grand Trunk Corporation
Grand Trunk Corporation is a U.S.-based holding company that oversees Canadian National Railway’s rail operations and assets in the United States.
-
C.
Piedmont Limited
The Piedmont Limited was a prominent Southern Railway passenger train that provided long-distance service in the southeastern United States during the early to mid-20th century.
-
D.
The North Bank Limited
The North Bank Limited was a prominent early 20th-century passenger train that provided scenic service through the Pacific Northwest along the Columbia River.
-
E.
Sun Company of Canada
Sun Company of Canada was a major Canadian integrated oil and gas company that later became known as Suncor Energy.
- 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: North Western Limited Target entity description: North Western Limited was a named passenger train operated by the Chicago and North Western Railway that provided intercity service between Chicago and the Twin Cities.
-
A.
North Coast Limited
The North Coast Limited was a premier transcontinental passenger train that ran between Chicago and the Pacific Northwest, renowned for its scenic route and luxury service.
-
B.
Grand Trunk Corporation
Grand Trunk Corporation is a U.S.-based holding company that oversees Canadian National Railway’s rail operations and assets in the United States.
-
C.
Piedmont Limited
The Piedmont Limited was a prominent Southern Railway passenger train that provided long-distance service in the southeastern United States during the early to mid-20th century.
-
D.
The North Bank Limited
The North Bank Limited was a prominent early 20th-century passenger train that provided scenic service through the Pacific Northwest along the Columbia River.
-
E.
Sun Company of Canada
Sun Company of Canada was a major Canadian integrated oil and gas company that later became known as Suncor Energy.
- 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_69da6268a034819081cbd9ea5a1c9475 |
completed | April 11, 2026, 3:02 p.m. |
| NER | Named-entity recognition | batch_69e668ed07c8819091bd9ffda237a91c |
completed | April 20, 2026, 5:57 p.m. |
Created at: April 11, 2026, 11:36 p.m.