Triple
T17069312
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Union Pacific Heritage Fleet |
E414171
|
entity |
| Predicate | includes |
P1393
|
FINISHED |
| Object |
Union Pacific E9A 949
Union Pacific E9A 949 is a preserved streamlined EMD E9 diesel-electric locomotive that serves in Union Pacific’s Heritage Fleet for special excursion and ceremonial passenger trains.
|
E1253905
|
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: Union Pacific E9A 949 | Statement: [Union Pacific Heritage Fleet, includes, Union Pacific E9A 949]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Union Pacific E9A 949 Context triple: [Union Pacific Heritage Fleet, includes, Union Pacific E9A 949]
-
A.
Union Pacific 3985
Union Pacific 3985 is a famous Challenger-type articulated steam locomotive built in 1943 for the Union Pacific Railroad and later restored for excursion service as one of the largest operating steam locomotives in the world.
-
B.
Union Pacific 6936
Union Pacific 6936 is a preserved Union Pacific DDA40X "Centennial" diesel-electric locomotive, notable as the last of its kind to remain operational and used for special excursion and heritage trains.
-
C.
Union Pacific No. 119
Union Pacific No. 119 was the steam locomotive that represented the Union Pacific Railroad at the 1869 Golden Spike ceremony marking the completion of the First Transcontinental Railroad.
-
D.
Southern Pacific GS-4
The Southern Pacific GS-4 is a class of streamlined 4-8-4 "Northern" steam locomotives built in the 1940s for the Southern Pacific Railroad, renowned for their distinctive orange and red "Daylight" livery and high-speed passenger service.
-
E.
Union Pacific 4014
Union Pacific 4014, known as "Big Boy," is one of the largest and most powerful steam locomotives ever built, restored to operation for excursion service in the 21st century.
- 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: Union Pacific E9A 949 Triple: [Union Pacific Heritage Fleet, includes, Union Pacific E9A 949]
Generated description
Union Pacific E9A 949 is a preserved streamlined EMD E9 diesel-electric locomotive that serves in Union Pacific’s Heritage Fleet for special excursion and ceremonial passenger trains.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Union Pacific E9A 949 Target entity description: Union Pacific E9A 949 is a preserved streamlined EMD E9 diesel-electric locomotive that serves in Union Pacific’s Heritage Fleet for special excursion and ceremonial passenger trains.
-
A.
Union Pacific 3985
Union Pacific 3985 is a famous Challenger-type articulated steam locomotive built in 1943 for the Union Pacific Railroad and later restored for excursion service as one of the largest operating steam locomotives in the world.
-
B.
Union Pacific 6936
Union Pacific 6936 is a preserved Union Pacific DDA40X "Centennial" diesel-electric locomotive, notable as the last of its kind to remain operational and used for special excursion and heritage trains.
-
C.
Union Pacific No. 119
Union Pacific No. 119 was the steam locomotive that represented the Union Pacific Railroad at the 1869 Golden Spike ceremony marking the completion of the First Transcontinental Railroad.
-
D.
Southern Pacific GS-4
The Southern Pacific GS-4 is a class of streamlined 4-8-4 "Northern" steam locomotives built in the 1940s for the Southern Pacific Railroad, renowned for their distinctive orange and red "Daylight" livery and high-speed passenger service.
-
E.
Union Pacific 4014
Union Pacific 4014, known as "Big Boy," is one of the largest and most powerful steam locomotives ever built, restored to operation for excursion service in the 21st century.
- 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_69d886cef44c8190ba56c44b4e863e64 |
completed | April 10, 2026, 5:12 a.m. |
| NER | Named-entity recognition | batch_69e3dbbfb1f08190807301ff6e573cf5 |
completed | April 18, 2026, 7:30 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a014823d0a8819095491aef9b258971 |
completed | May 11, 2026, 3:08 a.m. |
| NEDg | Description generation | batch_6a014a1993a48190bf65e590ff57c9c2 |
completed | May 11, 2026, 3:16 a.m. |
| NED2 | Entity disambiguation (via description) | batch_6a014a7fa5208190a0a60649fe6292d1 |
completed | May 11, 2026, 3:18 a.m. |
Created at: April 10, 2026, 5:34 a.m.