Triple
T164761
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Pennsylvania Railroad |
E2987
|
entity |
| Predicate | ownedSubsidiary |
P254
|
FINISHED |
| Object | Pittsburgh, Cincinnati, Chicago and St. Louis Railroad |
E9234
|
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: Pittsburgh, Cincinnati, Chicago and St. Louis Railroad | Statement: [Pennsylvania Railroad, ownedSubsidiary, Pittsburgh, Cincinnati, Chicago and St. Louis Railroad]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Pittsburgh, Cincinnati, Chicago and St. Louis Railroad Context triple: [Pennsylvania Railroad, ownedSubsidiary, Pittsburgh, Cincinnati, Chicago and St. Louis Railroad]
-
A.
Pittsburgh, Cincinnati, Chicago and St. Louis Railroad
chosen
The Pittsburgh, Cincinnati, Chicago and St. Louis Railroad was a major Midwestern and Mid-Atlantic rail system that formed a key part of the Pennsylvania Railroad’s network, linking important industrial cities across the region.
-
B.
Chicago Railways Company
The Chicago Railways Company was a major early 20th-century street railway operator in Chicago that formed a key part of the city’s urban transit system before consolidation into unified public transportation.
-
C.
Pennsylvania Railroad Company
The Pennsylvania Railroad Company was one of the largest and most influential American railroads of the 19th and early 20th centuries, playing a central role in the industrial development of the United States.
-
D.
Philadelphia, Wilmington and Baltimore Railroad
The Philadelphia, Wilmington and Baltimore Railroad was a 19th-century rail line that formed a key segment of the main corridor linking the northeastern United States, particularly connecting Philadelphia with points south.
-
E.
Calumet and South Chicago Railway Company
The Calumet and South Chicago Railway Company was a street railway operator that provided transit services in Chicago’s South Side and surrounding industrial areas in the early 20th century.
- 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_69a2524ce1e48190ab066bf72859f474 |
completed | Feb. 28, 2026, 2:26 a.m. |
| NER | Named-entity recognition | batch_69a25bae79b48190abfd247410e5918f |
completed | Feb. 28, 2026, 3:06 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a3232bf59c8190a8f2478c85b92ac8 |
completed | Feb. 28, 2026, 5:17 p.m. |
Created at: Feb. 28, 2026, 2:34 a.m.