Triple
T20530825
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Southern Pacific GS-4 |
E504061
|
entity |
| Predicate | fleetNumbers |
P44071
|
FINISHED |
| Object |
SP 4440
SP 4440 is a Southern Pacific GS-4 class streamlined steam locomotive that served in passenger service in the mid-20th century.
|
E1437052
|
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: SP 4440 | Statement: [Southern Pacific GS-4, fleetNumbers, SP 4440]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: SP 4440 Context triple: [Southern Pacific GS-4, fleetNumbers, SP 4440]
-
A.
SP 4450
SP 4450 is a specific Southern Pacific GS-4 class streamlined steam locomotive that operated in passenger service for the Southern Pacific Railroad.
-
B.
SP 4439
SP 4439 is a specific Southern Pacific GS-4 class streamlined steam locomotive that once hauled high-speed passenger trains in the western United States.
-
C.
SP 4250
SP 4250 is a Southern Pacific Railroad AC-11 class articulated steam locomotive, part of the railroad’s famous cab-forward fleet used primarily for heavy freight service.
-
D.
SP 4245
SP 4245 is a Southern Pacific Railroad EMD AC-11 class articulated steam locomotive, part of a series of powerful cab-forward engines used primarily for heavy freight service over mountainous routes.
-
E.
SP 4274
SP 4274 is a Southern Pacific Railroad locomotive, specifically an EMD AC-11 class cab-forward steam engine used for heavy freight service.
- 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: SP 4440 Triple: [Southern Pacific GS-4, fleetNumbers, SP 4440]
Generated description
SP 4440 is a Southern Pacific GS-4 class streamlined steam locomotive that served in passenger service in the mid-20th century.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: SP 4440 Target entity description: SP 4440 is a Southern Pacific GS-4 class streamlined steam locomotive that served in passenger service in the mid-20th century.
-
A.
SP 4450
SP 4450 is a specific Southern Pacific GS-4 class streamlined steam locomotive that operated in passenger service for the Southern Pacific Railroad.
-
B.
SP 4439
SP 4439 is a specific Southern Pacific GS-4 class streamlined steam locomotive that once hauled high-speed passenger trains in the western United States.
-
C.
SP 4250
SP 4250 is a Southern Pacific Railroad AC-11 class articulated steam locomotive, part of the railroad’s famous cab-forward fleet used primarily for heavy freight service.
-
D.
SP 4245
SP 4245 is a Southern Pacific Railroad EMD AC-11 class articulated steam locomotive, part of a series of powerful cab-forward engines used primarily for heavy freight service over mountainous routes.
-
E.
SP 4274
SP 4274 is a Southern Pacific Railroad locomotive, specifically an EMD AC-11 class cab-forward steam engine used for heavy freight service.
- 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_69e0b4b3a6e08190ae663701f50fab8e |
completed | April 16, 2026, 10:06 a.m. |
| NER | Named-entity recognition | batch_69e6a06b923c81908ba24be6645a7c61 |
completed | April 20, 2026, 9:53 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a08a560df3c81908c5978f8ccf88e5f |
completed | May 16, 2026, 5:12 p.m. |
| NEDg | Description generation | batch_6a08a72cda488190b18b50724666ae55 |
completed | May 16, 2026, 5:19 p.m. |
| NED2 | Entity disambiguation (via description) | batch_6a08a79a373481909c37da1cc810e2d9 |
completed | May 16, 2026, 5:21 p.m. |
Created at: April 16, 2026, 11:37 a.m.