Triple
T4642789
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Churchill Downs |
E101692
|
entity |
| Predicate | railwayAccess |
P57688
|
FINISHED |
| Object | historic Louisville and Nashville Railroad (past) |
E64460
|
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: historic Louisville and Nashville Railroad (past) | Statement: [Churchill Downs, railwayAccess, historic Louisville and Nashville Railroad (past)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: historic Louisville and Nashville Railroad (past) Context triple: [Churchill Downs, railwayAccess, historic Louisville and Nashville Railroad (past)]
-
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.
Lebanon Mason Monroe Railroad
The Lebanon Mason Monroe Railroad is a heritage tourist railway in southwestern Ohio that offers scenic excursion rides on historic trains.
-
C.
Durbin and Greenbrier Valley Railroad
The Durbin and Greenbrier Valley Railroad is a heritage railroad in West Virginia that operates scenic tourist excursions through the Allegheny Mountains using historic locomotives and rolling stock.
-
D.
Overseas Railroad (historic)
The Overseas Railroad was an early 20th-century extension of the Florida East Coast Railway that famously connected mainland Florida to Key West via a series of long bridges across the Florida Keys.
-
E.
Covington and Ohio Railroad
The Covington and Ohio Railroad was a 19th-century American railway company that became part of the Chesapeake and Ohio Railway through consolidation.
- 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_69bd43d3bc7c81908f81fcf380476b0f |
completed | March 20, 2026, 12:55 p.m. |
| NER | Named-entity recognition | batch_69bd6234e8108190b985270b9ddd1f3a |
completed | March 20, 2026, 3:05 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69bdfad80f14819097e022c9d9da17eb |
completed | March 21, 2026, 1:56 a.m. |
Created at: March 20, 2026, 1:14 p.m.