Triple
T18520978
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | USRA Light Mikado |
E452580
|
entity |
| Predicate | operatedBy |
P86
|
FINISHED |
| Object | Louisville and Nashville Railroad |
—
|
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: Louisville and Nashville Railroad | Statement: [USRA Light Mikado, operatedBy, Louisville and Nashville Railroad]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Louisville and Nashville Railroad Context triple: [USRA Light Mikado, operatedBy, Louisville and Nashville Railroad]
-
A.
Louisville and Nashville Railroad
chosen
The Louisville and Nashville Railroad was a major U.S. railroad company that operated across the southeastern United States from the 19th century into the late 20th century, playing a key role in regional freight and passenger transportation.
-
B.
Nashville, Chattanooga and St. Louis Railway
The Nashville, Chattanooga and St. Louis Railway was a prominent Southern U.S. railroad that connected key cities across Tennessee and neighboring states, playing a major role in regional transportation and commerce in the late 19th and early 20th centuries.
-
C.
Clinchfield Railroad
Clinchfield Railroad was a U.S. Appalachian-region freight railroad renowned for its heavy coal traffic and engineering feats through the rugged mountains of Kentucky, Virginia, Tennessee, and North Carolina.
-
D.
Piedmont Railroad
The Piedmont Railroad was a 19th-century rail line in the American South that formed part of an important transportation corridor later integrated into larger regional railroad systems.
-
E.
St. Louis, Memphis and Southeastern Railroad
The St. Louis, Memphis and Southeastern Railroad was a regional U.S. railroad line that operated in the early 20th century, later becoming part of the St. Louis–San Francisco Railway (Frisco) system.
- 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_69d8d386df84819092355ebb260d848e |
completed | April 10, 2026, 10:40 a.m. |
| NER | Named-entity recognition | batch_69e5338db5e4819086503a2176dfe499 |
completed | April 19, 2026, 7:57 p.m. |
Created at: April 10, 2026, 11:37 a.m.