Triple
T398921
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Pittsburgh, Cincinnati, Chicago and St. Louis Railroad |
E9234
|
entity |
| Predicate | successorLine |
P10969
|
FINISHED |
| Object | Norfolk Southern Railway (on some segments) |
E11672
|
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: Norfolk Southern Railway (on some segments) | Statement: [Pittsburgh, Cincinnati, Chicago and St. Louis Railroad, successorLine, Norfolk Southern Railway (on some segments)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Norfolk Southern Railway (on some segments) Context triple: [Pittsburgh, Cincinnati, Chicago and St. Louis Railroad, successorLine, Norfolk Southern Railway (on some segments)]
-
A.
Norfolk Southern Railway
chosen
Norfolk Southern Railway is a major U.S. freight railroad company operating an extensive rail network across the eastern United States.
-
B.
CSX Transportation
CSX Transportation is a major U.S. freight railroad company operating an extensive rail network across the eastern United States.
-
C.
Seaboard Air Line Railroad
Seaboard Air Line Railroad was a major American railroad that operated in the southeastern United States, known for its prominent passenger services and streamlined trains.
-
D.
Seaboard Coast Line Railroad
Seaboard Coast Line Railroad was a major Class I railroad in the southeastern United States, formed in 1967 and known for both freight operations and prominent passenger services before becoming part of CSX Transportation.
-
E.
Conrail
Conrail was a major U.S. freight railroad formed in the 1970s to take over and revitalize the operations of several bankrupt Northeastern railroads.
- 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_69a2e8004cb88190b92ed1add6abf41a |
completed | Feb. 28, 2026, 1:05 p.m. |
| NER | Named-entity recognition | batch_69a2ee2c2d1881909aa1ccfaa4172b38 |
completed | Feb. 28, 2026, 1:31 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a43e6cf1048190abf3f13ba35a3980 |
completed | March 1, 2026, 1:26 p.m. |
Created at: Feb. 28, 2026, 1:08 p.m.