Triple
T7429206
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | AC-11 |
E171444
|
entity |
| Predicate | fleetNumbers |
P44071
|
FINISHED |
| Object |
SP 4272
SP 4272 is a Southern Pacific Railroad locomotive, specifically an AC-11 class cab-forward steam engine used for heavy freight service.
|
E672188
|
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 4272 | Statement: [AC-11, fleetNumbers, SP 4272]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: SP 4272 Context triple: [AC-11, fleetNumbers, SP 4272]
-
A.
SP 4271
SP 4271 is a Southern Pacific Railroad locomotive, preserved as part of the railroad’s historic diesel-electric fleet.
-
B.
SP 4247
SP 4247 is a Southern Pacific Railroad AC-11 class articulated steam locomotive, part of the railroad’s well-known cab-forward fleet used primarily in heavy freight service.
-
C.
SP 4257
SP 4257 is a preserved Southern Pacific AC-11 class articulated steam locomotive, notable as one of the railroad’s powerful cab-forward engines used in heavy freight service.
-
D.
SP 4249
SP 4249 is a Southern Pacific Railroad AC-11 class articulated steam locomotive, part of the railroad’s famous cab-forward fleet used primarily in heavy freight service.
-
E.
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.
- 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 4272 Triple: [AC-11, fleetNumbers, SP 4272]
Generated description
SP 4272 is a Southern Pacific Railroad locomotive, specifically an AC-11 class cab-forward steam engine used for heavy freight service.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: SP 4272 Target entity description: SP 4272 is a Southern Pacific Railroad locomotive, specifically an AC-11 class cab-forward steam engine used for heavy freight service.
-
A.
SP 4271
SP 4271 is a Southern Pacific Railroad locomotive, preserved as part of the railroad’s historic diesel-electric fleet.
-
B.
SP 4247
SP 4247 is a Southern Pacific Railroad AC-11 class articulated steam locomotive, part of the railroad’s well-known cab-forward fleet used primarily in heavy freight service.
-
C.
SP 4257
SP 4257 is a preserved Southern Pacific AC-11 class articulated steam locomotive, notable as one of the railroad’s powerful cab-forward engines used in heavy freight service.
-
D.
SP 4249
SP 4249 is a Southern Pacific Railroad AC-11 class articulated steam locomotive, part of the railroad’s famous cab-forward fleet used primarily in heavy freight service.
-
E.
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.
- 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_69c68a63491881909281f73d4d5643bf |
completed | March 27, 2026, 1:47 p.m. |
| NER | Named-entity recognition | batch_69c6f3082f188190af5673d18ac7e87e |
completed | March 27, 2026, 9:13 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c84ee844cc819081f44426658c7e27 |
completed | March 28, 2026, 9:58 p.m. |
| NEDg | Description generation | batch_69c852da8c048190b2a0696f2e7b65c1 |
completed | March 28, 2026, 10:14 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69c853958b748190b4ecc9797389cc85 |
completed | March 28, 2026, 10:17 p.m. |
Created at: March 27, 2026, 3:12 p.m.