Triple
T5843283
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Charles T. Yerkes |
E129644
|
entity |
| Predicate | employer |
P7
|
FINISHED |
| Object | Chicago street railway companies |
E12509
|
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: Chicago street railway companies | Statement: [Charles T. Yerkes, employer, Chicago street railway companies]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Chicago street railway companies Context triple: [Charles T. Yerkes, employer, Chicago street railway companies]
-
A.
Chicago Rapid Transit Company
The Chicago Rapid Transit Company was the private operator of Chicago’s elevated “L” rail system in the early 20th century before public transit was consolidated under the Chicago Transit Authority.
-
B.
Chicago Great Western Railway
The Chicago Great Western Railway was a regional American railroad that operated in the Midwest, known for its efficient freight service and eventual absorption into larger rail systems.
-
C.
Chicago Surface Lines
Chicago Surface Lines was a privately operated streetcar and bus system that provided most of Chicago’s surface public transportation in the first half of the 20th century.
-
D.
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.
-
E.
Chicago Railways Company
chosen
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.
- 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_69c0084bd31c8190a796bb6284845e83 |
completed | March 22, 2026, 3:18 p.m. |
| NER | Named-entity recognition | batch_69c034d9da0c8190970319d0dc2fc73f |
completed | March 22, 2026, 6:28 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c0a1a6587c8190b76b1005178c29a9 |
completed | March 23, 2026, 2:12 a.m. |
Created at: March 22, 2026, 3:54 p.m.