Triple
T20658943
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | EMD SD40-2 |
E507704
|
entity |
| Predicate | modelFamily |
P11218
|
FINISHED |
| Object | EMD SD40 series |
—
|
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: EMD SD40 series | Statement: [EMD SD40-2, modelFamily, EMD SD40 series]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: EMD SD40 series Context triple: [EMD SD40-2, modelFamily, EMD SD40 series]
-
A.
EMD GP40
The EMD GP40 is a four-axle diesel-electric locomotive built by Electro-Motive Division in the late 1960s and early 1970s, widely used by North American railroads for freight service.
-
B.
EMD SD70 series locomotives
The EMD SD70 series locomotives are a family of high-horsepower, six-axle diesel-electric freight locomotives widely used by North American railroads since the 1990s for heavy mainline service.
-
C.
EMD SD40-2 locomotive
The EMD SD40-2 locomotive is a highly successful and widely used North American diesel-electric freight locomotive introduced in the 1970s, known for its reliability, modular design, and long service life.
-
D.
EMD SD9
The EMD SD9 is a six-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division in the 1950s, widely used by North American railroads for heavy freight service.
-
E.
EMD GP38
The EMD GP38 is a four-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division, widely used by North American railroads for freight service.
- 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: EMD SD40 series Target entity description: The EMD SD40 series is a family of six-axle diesel-electric freight locomotives widely used across North American railroads for their reliability and heavy-haul capabilities.
-
A.
EMD GP40
The EMD GP40 is a four-axle diesel-electric locomotive built by Electro-Motive Division in the late 1960s and early 1970s, widely used by North American railroads for freight service.
-
B.
EMD SD70 series locomotives
The EMD SD70 series locomotives are a family of high-horsepower, six-axle diesel-electric freight locomotives widely used by North American railroads since the 1990s for heavy mainline service.
-
C.
EMD SD40-2 locomotive
chosen
The EMD SD40-2 locomotive is a highly successful and widely used North American diesel-electric freight locomotive introduced in the 1970s, known for its reliability, modular design, and long service life.
-
D.
EMD SD9
The EMD SD9 is a six-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division in the 1950s, widely used by North American railroads for heavy freight service.
-
E.
EMD GP38
The EMD GP38 is a four-axle diesel-electric road switcher locomotive built by General Motors’ Electro-Motive Division, widely used by North American railroads for freight service.
- F. None of above.
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_69e0b4bf58c081908e52a4500e03ff83 |
completed | April 16, 2026, 10:06 a.m. |
| NER | Named-entity recognition | batch_69e6b2eefd5c8190a71d4be690a6ae0e |
completed | April 20, 2026, 11:12 p.m. |
Created at: April 16, 2026, 11:43 a.m.