Triple
T2512812
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Metra Electric District line |
E52738
|
entity |
| Predicate | hasBranch |
P35
|
FINISHED |
| Object |
South Chicago branch
The South Chicago branch is a commuter rail branch line in Chicago operated as part of Metra's Electric District, serving neighborhoods on the city's South Side.
|
E275124
|
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: South Chicago branch | Statement: [Metra Electric District line, hasBranch, South Chicago branch]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: South Chicago branch Context triple: [Metra Electric District line, hasBranch, South Chicago branch]
-
A.
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.
-
B.
Cermak Branch
Cermak Branch is a segment of the Chicago Transit Authority’s rapid transit system that forms part of the Pink Line route.
-
C.
Chicago West
Chicago West is the daughter of American rapper and producer Kanye West and media personality Kim Kardashian.
-
D.
North Side of Chicago
The North Side of Chicago is a densely populated, largely residential and commercial area of the city known for its lakefront neighborhoods, cultural attractions, and vibrant nightlife.
-
E.
North Chicago, Illinois
North Chicago, Illinois is an industrial and residential city in northeastern Illinois, known for hosting the Great Lakes Naval Training Center and being part of the Chicago metropolitan area.
- 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: South Chicago branch Triple: [Metra Electric District line, hasBranch, South Chicago branch]
Generated description
The South Chicago branch is a commuter rail branch line in Chicago operated as part of Metra's Electric District, serving neighborhoods on the city's South Side.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: South Chicago branch Target entity description: The South Chicago branch is a commuter rail branch line in Chicago operated as part of Metra's Electric District, serving neighborhoods on the city's South Side.
-
A.
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.
-
B.
Cermak Branch
Cermak Branch is a segment of the Chicago Transit Authority’s rapid transit system that forms part of the Pink Line route.
-
C.
Chicago West
Chicago West is the daughter of American rapper and producer Kanye West and media personality Kim Kardashian.
-
D.
North Side of Chicago
The North Side of Chicago is a densely populated, largely residential and commercial area of the city known for its lakefront neighborhoods, cultural attractions, and vibrant nightlife.
-
E.
North Chicago, Illinois
North Chicago, Illinois is an industrial and residential city in northeastern Illinois, known for hosting the Great Lakes Naval Training Center and being part of the Chicago metropolitan area.
- 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_69af2b934d3c81909627a5f4d6e6ca6a |
completed | March 9, 2026, 8:20 p.m. |
| NEDg | Description generation | batch_69af4fd4f2a4819094b630cef9bfd8c4 |
completed | March 9, 2026, 10:55 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69af502a3c5c819087d3e5798db53c38 |
completed | March 9, 2026, 10:56 p.m. |
Created at: March 6, 2026, 9:46 p.m.