Triple
T2512811
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Metra Electric District line |
E52738
|
entity |
| Predicate | hasBranch |
P35
|
FINISHED |
| Object |
Blue Island branch
The Blue Island branch is a commuter rail branch line in the Chicago area that serves as part of Metra's Electric District network, connecting downtown Chicago with the suburb of Blue Island.
|
E272750
|
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: Blue Island branch | Statement: [Metra Electric District line, hasBranch, Blue Island branch]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Blue Island branch Context triple: [Metra Electric District line, hasBranch, Blue Island branch]
-
A.
Cermak Branch
Cermak Branch is a segment of the Chicago Transit Authority’s rapid transit system that forms part of the Pink Line route.
-
B.
Rock Island District Beverly Branch
The Rock Island District Beverly Branch is a commuter rail branch line in the Chicago area that serves the Beverly and Morgan Park neighborhoods as part of Metra’s Rock Island District service.
-
C.
Blue Island Public Library building
The Blue Island Public Library building is a historic public library structure in Blue Island, Illinois, noted for its longstanding role in the community’s educational and cultural life.
-
D.
Blue Island Park District
Blue Island Park District is the local governmental agency that manages and operates parks, recreational facilities, and community programs for residents of Blue Island, Illinois.
-
E.
Oak Brook Public Library
Oak Brook Public Library is a community public library serving residents of Oak Brook, Illinois with lending materials, programs, and information services.
- 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: Blue Island branch Triple: [Metra Electric District line, hasBranch, Blue Island branch]
Generated description
The Blue Island branch is a commuter rail branch line in the Chicago area that serves as part of Metra's Electric District network, connecting downtown Chicago with the suburb of Blue Island.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Blue Island branch Target entity description: The Blue Island branch is a commuter rail branch line in the Chicago area that serves as part of Metra's Electric District network, connecting downtown Chicago with the suburb of Blue Island.
-
A.
Cermak Branch
Cermak Branch is a segment of the Chicago Transit Authority’s rapid transit system that forms part of the Pink Line route.
-
B.
Rock Island District Beverly Branch
The Rock Island District Beverly Branch is a commuter rail branch line in the Chicago area that serves the Beverly and Morgan Park neighborhoods as part of Metra’s Rock Island District service.
-
C.
Blue Island Public Library building
The Blue Island Public Library building is a historic public library structure in Blue Island, Illinois, noted for its longstanding role in the community’s educational and cultural life.
-
D.
Blue Island Park District
Blue Island Park District is the local governmental agency that manages and operates parks, recreational facilities, and community programs for residents of Blue Island, Illinois.
-
E.
Oak Brook Public Library
Oak Brook Public Library is a community public library serving residents of Oak Brook, Illinois with lending materials, programs, and information services.
- F. None of above. chosen
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_69ab4958e76481908a235377dd921c9e |
completed | March 6, 2026, 9:38 p.m. |
| NER | Named-entity recognition | batch_69abd20b6d008190acec0eb172e218c9 |
completed | March 7, 2026, 7:21 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69af1faed61481909f13b8a014b39ed3 |
completed | March 9, 2026, 7:29 p.m. |
| NEDg | Description generation | batch_69af20e421308190b62a954659537163 |
completed | March 9, 2026, 7:35 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69af215e2eec8190a18e41824acf196b |
completed | March 9, 2026, 7:37 p.m. |
Created at: March 6, 2026, 9:46 p.m.