Triple
T3604257
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | PRR K4s |
E76330
|
entity |
| Predicate | preservedLocomotive |
P49898
|
FINISHED |
| Object | PRR 3750 |
E76330
|
NE FINISHED |
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: PRR 3750 | Statement: [PRR K4s, preservedLocomotive, PRR 3750]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: PRR 3750 Context triple: [PRR K4s, preservedLocomotive, PRR 3750]
-
A.
PRR K2
The PRR K2 was an early class of steam locomotives used by the Pennsylvania Railroad, serving as a predecessor to the more famous K4s Pacific-type engines.
-
B.
PRR K4s
chosen
The PRR K4s was a class of iconic 4-6-2 "Pacific" steam locomotives that served as the primary passenger power for the Pennsylvania Railroad in the first half of the 20th century.
-
C.
PRR E8
The PRR E8 was a class of experimental 4-4-2 "Atlantic" type steam locomotives built by the Pennsylvania Railroad in the early 20th century to test high-speed passenger service concepts.
-
D.
Standard Passenger Pacific of the PRR
The "Standard Passenger Pacific of the PRR" refers to the Pennsylvania Railroad’s K4s class, a highly successful and iconic 4-6-2 steam locomotive that became the railroad’s primary passenger engine in the early to mid-20th century.
-
E.
PRR T1
The PRR T1 was a class of streamlined 4-4-4-4 duplex steam locomotives built for the Pennsylvania Railroad in the 1940s, known for their high-speed passenger service and distinctive Art Deco styling.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69ad85d93dcc819094fba90cf70f4996 |
completed | March 8, 2026, 2:21 p.m. |
| NER | Named-entity recognition | batch_69adc1e07bc481908d9fce18d36d8e0d |
completed | March 8, 2026, 6:37 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b44f02b3c081909705e05ac923f840 |
completed | March 13, 2026, 5:53 p.m. |
Created at: March 8, 2026, 3:22 p.m.