Triple
T20530819
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Southern Pacific GS-4 |
E504061
|
entity |
| Predicate | designer |
P184
|
FINISHED |
| Object | Southern Pacific Railroad Mechanical Department |
—
|
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: Southern Pacific Railroad Mechanical Department | Statement: [Southern Pacific GS-4, designer, Southern Pacific Railroad Mechanical Department]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Southern Pacific Railroad Mechanical Department Context triple: [Southern Pacific GS-4, designer, Southern Pacific Railroad Mechanical Department]
-
A.
Southern Pacific Cab Forward locomotive
The Southern Pacific Cab Forward locomotive is a distinctive class of steam engines with the cab placed at the front for crew safety, famously used by the Southern Pacific Railroad to haul trains through long, smoky mountain tunnels and snow sheds in the American West.
-
B.
Central Pacific Railroad No. 173
Central Pacific Railroad No. 173 was a 19th-century steam locomotive whose design and appearance helped inspire the look of Disneyland’s C.K. Holliday engine.
-
C.
Union Pacific Yard
Union Pacific Yard is a rail yard facility operated by the Union Pacific Railroad for organizing, storing, and dispatching freight trains and rolling stock.
-
D.
Pullman Works
Pullman Works was a major railcar manufacturing and repair facility historically associated with the Pullman Company in Chicago, Illinois.
-
E.
Southern Pacific GS-3
The Southern Pacific GS-3 was a class of streamlined 4-8-4 "Northern" type steam locomotives built in the late 1930s for high-speed passenger service on the Southern Pacific Railroad.
- 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: Southern Pacific Railroad Mechanical Department Target entity description: The Southern Pacific Railroad Mechanical Department was the in-house engineering and design division of the Southern Pacific Railroad responsible for developing and refining the company’s locomotives and rolling stock.
-
A.
Southern Pacific Cab Forward locomotive
The Southern Pacific Cab Forward locomotive is a distinctive class of steam engines with the cab placed at the front for crew safety, famously used by the Southern Pacific Railroad to haul trains through long, smoky mountain tunnels and snow sheds in the American West.
-
B.
Central Pacific Railroad No. 173
Central Pacific Railroad No. 173 was a 19th-century steam locomotive whose design and appearance helped inspire the look of Disneyland’s C.K. Holliday engine.
-
C.
Union Pacific Yard
Union Pacific Yard is a rail yard facility operated by the Union Pacific Railroad for organizing, storing, and dispatching freight trains and rolling stock.
-
D.
Pullman Works
Pullman Works was a major railcar manufacturing and repair facility historically associated with the Pullman Company in Chicago, Illinois.
-
E.
Southern Pacific GS-3
The Southern Pacific GS-3 was a class of streamlined 4-8-4 "Northern" type steam locomotives built in the late 1930s for high-speed passenger service on the Southern Pacific Railroad.
- 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_69e0b4b3a6e08190ae663701f50fab8e |
completed | April 16, 2026, 10:06 a.m. |
| NER | Named-entity recognition | batch_69e6a06b923c81908ba24be6645a7c61 |
completed | April 20, 2026, 9:53 p.m. |
Created at: April 16, 2026, 11:37 a.m.