Triple
T15067856
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | 54th/Cermak station |
E379799
|
entity |
| Predicate | partOf |
P40
|
FINISHED |
| Object |
Cermak Branch of the Pink Line
The Cermak Branch of the Pink Line is a segment of Chicago's 'L' rapid transit system serving the city's West Side and nearby suburbs.
|
E379799
|
NE FINISHED |
How this triple was built (4 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: Cermak Branch of the Pink Line | Statement: [54th/Cermak station, partOf, Cermak Branch of the Pink Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Cermak Branch of the Pink Line Context triple: [54th/Cermak station, partOf, Cermak Branch of the Pink Line]
-
A.
Ravenswood branch (Brown Line)
The Ravenswood branch of Chicago's Brown Line is an elevated rapid transit route on the city's North Side, serving neighborhoods such as Lincoln Park, Lakeview, and Ravenswood and connecting them to the Loop.
-
B.
South Chicago Branch of Metra Electric District
The South Chicago Branch of Metra Electric District is a commuter rail line on Chicago’s South Side that provides electric train service between downtown Chicago and the South Chicago neighborhood.
-
C.
Oak Park station (Blue Line)
Oak Park station (Blue Line) is an elevated Chicago Transit Authority rapid transit stop in Oak Park, Illinois, serving the Forest Park branch of the Blue Line.
-
D.
54th/Cermak station
54th/Cermak station is a Chicago 'L' rapid transit stop in Cicero, Illinois, serving as the western terminal of the CTA Pink Line.
-
E.
Irving Park (Brown Line)
Irving Park (Brown Line) is an elevated Chicago 'L' rapid transit station on the city's North Side serving the CTA Brown Line.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Cermak Branch of the Pink Line Triple: [54th/Cermak station, partOf, Cermak Branch of the Pink Line]
Generated description
The Cermak Branch of the Pink Line is a segment of Chicago's 'L' rapid transit system serving the city's West Side and nearby suburbs.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Cermak Branch of the Pink Line Target entity description: The Cermak Branch of the Pink Line is a segment of Chicago's 'L' rapid transit system serving the city's West Side and nearby suburbs.
-
A.
Ravenswood branch (Brown Line)
The Ravenswood branch of Chicago's Brown Line is an elevated rapid transit route on the city's North Side, serving neighborhoods such as Lincoln Park, Lakeview, and Ravenswood and connecting them to the Loop.
-
B.
South Chicago Branch of Metra Electric District
The South Chicago Branch of Metra Electric District is a commuter rail line on Chicago’s South Side that provides electric train service between downtown Chicago and the South Chicago neighborhood.
-
C.
Oak Park station (Blue Line)
Oak Park station (Blue Line) is an elevated Chicago Transit Authority rapid transit stop in Oak Park, Illinois, serving the Forest Park branch of the Blue Line.
-
D.
54th/Cermak station
chosen
54th/Cermak station is a Chicago 'L' rapid transit stop in Cicero, Illinois, serving as the western terminal of the CTA Pink Line.
-
E.
Irving Park (Brown Line)
Irving Park (Brown Line) is an elevated Chicago 'L' rapid transit station on the city's North Side serving the CTA Brown Line.
- F. None of above.
Provenance (5 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_69d85cd7683881908d405c1b5d7b4f7f |
completed | April 10, 2026, 2:13 a.m. |
| NER | Named-entity recognition | batch_69dedeebc7e48190a86b4f0afe8844bb |
completed | April 15, 2026, 12:42 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69fea5cb04e88190a42bb0e516df61bc |
completed | May 9, 2026, 3:11 a.m. |
| NEDg | Description generation | batch_69fea66a04988190b483210c1671d287 |
completed | May 9, 2026, 3:13 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69fea70e2fbc81908f168925b06bdbd6 |
completed | May 9, 2026, 3:16 a.m. |
Created at: April 10, 2026, 3:02 a.m.