Triple
T17069357
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Union Pacific Heritage Fleet |
E414171
|
entity |
| Predicate | notableDieselLocomotive |
P125202
|
FINISHED |
| Object | Union Pacific E9A 951 |
—
|
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: Union Pacific E9A 951 | Statement: [Union Pacific Heritage Fleet, notableDieselLocomotive, Union Pacific E9A 951]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Union Pacific E9A 951 Context triple: [Union Pacific Heritage Fleet, notableDieselLocomotive, Union Pacific E9A 951]
-
A.
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.
-
B.
Union Pacific E9B 963B
Union Pacific E9B 963B is a preserved E9B-series diesel locomotive unit that operates as part of Union Pacific’s Heritage Fleet on special excursion and ceremonial trains.
-
C.
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.
-
D.
Union Pacific 844
Union Pacific 844 is a preserved 4-8-4 steam locomotive famed as the last steam engine delivered to Union Pacific and now used on excursion and heritage trains.
-
E.
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.
- 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: Union Pacific E9A 951 Target entity description: Union Pacific E9A 951 is a preserved classic EMD E9A passenger diesel locomotive that serves as a flagship unit in Union Pacific’s Heritage Fleet for excursion and special event service.
-
A.
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.
-
B.
Union Pacific E9B 963B
Union Pacific E9B 963B is a preserved E9B-series diesel locomotive unit that operates as part of Union Pacific’s Heritage Fleet on special excursion and ceremonial trains.
-
C.
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.
-
D.
Union Pacific 844
Union Pacific 844 is a preserved 4-8-4 steam locomotive famed as the last steam engine delivered to Union Pacific and now used on excursion and heritage trains.
-
E.
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.
- 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_69d886cef44c8190ba56c44b4e863e64 |
completed | April 10, 2026, 5:12 a.m. |
| NER | Named-entity recognition | batch_69e3dbbfb1f08190807301ff6e573cf5 |
completed | April 18, 2026, 7:30 p.m. |
Created at: April 10, 2026, 5:34 a.m.