Triple
T17069356
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Union Pacific Heritage Fleet |
E414171
|
entity |
| Predicate | notableDieselLocomotive |
P125202
|
FINISHED |
| Object | Union Pacific E9B 963B |
—
|
NE NERFINISHED |
How this triple was built (2 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 E9B 963B | Statement: [Union Pacific Heritage Fleet, notableDieselLocomotive, Union Pacific E9B 963B]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Union Pacific E9B 963B Context triple: [Union Pacific Heritage Fleet, notableDieselLocomotive, Union Pacific E9B 963B]
-
A.
Union Pacific E9B 963B
chosen
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.
-
B.
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.
-
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 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.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
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.