Triple
T19650372
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Frederick Stark Pearson |
E471797
|
entity |
| Predicate | employer |
P7
|
FINISHED |
| Object | West End Street Railway Company |
—
|
NE NERFINISHED |
How this triple was built (3 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: West End Street Railway Company | Statement: [Frederick Stark Pearson, employer, West End Street Railway Company]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: West End Street Railway Company Context triple: [Frederick Stark Pearson, employer, West End Street Railway Company]
-
A.
Union Stock Yard and Transit Company
Union Stock Yard and Transit Company was the corporation that operated Chicago’s vast Union Stock Yards, once the central hub of the American meatpacking industry.
-
B.
Chicago City Railway Company
The Chicago City Railway Company was a major streetcar operator in Chicago that played a key role in developing the city’s public transit system in the late 19th and early 20th centuries.
-
C.
Philadelphia Rapid Transit Company
The Philadelphia Rapid Transit Company was a major early 20th-century public transit operator in Philadelphia that managed the city’s streetcar and rapid transit systems before being succeeded by later agencies.
-
D.
Southern Street Railway Company
The Southern Street Railway Company was a transit operator that managed portions of Chicago’s streetcar network as part of the Chicago Surface Lines system.
-
E.
Manhattan Railway Company
The Manhattan Railway Company was a major transit operator in New York City that ran the elevated train lines in Manhattan before the development of the city’s subway system.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: West End Street Railway Company Target entity description: The West End Street Railway Company was a major late-19th-century streetcar operator that consolidated and ran much of the public transit system in Boston, Massachusetts.
-
A.
Union Stock Yard and Transit Company
Union Stock Yard and Transit Company was the corporation that operated Chicago’s vast Union Stock Yards, once the central hub of the American meatpacking industry.
-
B.
Chicago City Railway Company
The Chicago City Railway Company was a major streetcar operator in Chicago that played a key role in developing the city’s public transit system in the late 19th and early 20th centuries.
-
C.
Philadelphia Rapid Transit Company
The Philadelphia Rapid Transit Company was a major early 20th-century public transit operator in Philadelphia that managed the city’s streetcar and rapid transit systems before being succeeded by later agencies.
-
D.
Southern Street Railway Company
The Southern Street Railway Company was a transit operator that managed portions of Chicago’s streetcar network as part of the Chicago Surface Lines system.
-
E.
Manhattan Railway Company
The Manhattan Railway Company was a major transit operator in New York City that ran the elevated train lines in Manhattan before the development of the city’s subway system.
- F. None of above. chosen
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_69d8e51395348190ac1416d46dfc6db0 |
completed | April 10, 2026, 11:54 a.m. |
| NER | Named-entity recognition | batch_69e641286bbc8190886f309de13063bf |
completed | April 20, 2026, 3:07 p.m. |
Created at: April 10, 2026, 1:44 p.m.