Triple
T6881566
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Metra Milwaukee District North Line |
E158809
|
entity |
| Predicate | partOf |
P40
|
FINISHED |
| Object |
Metra Milwaukee District
Metra Milwaukee District is a commuter rail service corridor in the Chicago metropolitan area that encompasses the Milwaukee District North and West Lines operated by Metra.
|
E626903
|
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: Metra Milwaukee District | Statement: [Metra Milwaukee District North Line, partOf, Metra Milwaukee District]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Metra Milwaukee District Context triple: [Metra Milwaukee District North Line, partOf, Metra Milwaukee District]
-
A.
Metra Milwaukee District West Line
The Metra Milwaukee District West Line is a commuter rail line in the Chicago metropolitan area that runs between Chicago Union Station and Elgin, serving numerous suburbs in Cook, DuPage, and Kane counties.
-
B.
Metra Milwaukee District North Line
The Metra Milwaukee District North Line is a commuter rail line in the Chicago metropolitan area that runs between Chicago Union Station and Fox Lake, Illinois, serving numerous northern suburbs along its route.
-
C.
Metra Rock Island District line
The Metra Rock Island District line is a commuter rail route in the Chicago metropolitan area that connects downtown Chicago with various southwest suburbs, including Tinley Park.
-
D.
Metra Heritage Corridor
The Metra Heritage Corridor is a commuter rail line in the Chicago metropolitan area that provides weekday service between Chicago Union Station and Joliet, Illinois, largely following the historic Illinois & Michigan Canal corridor.
-
E.
Metra Electric District line
The Metra Electric District line is a commuter rail line in the Chicago metropolitan area that runs from downtown Chicago to its southern suburbs, serving key destinations along the South Side and beyond.
- 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: Metra Milwaukee District Triple: [Metra Milwaukee District North Line, partOf, Metra Milwaukee District]
Generated description
Metra Milwaukee District is a commuter rail service corridor in the Chicago metropolitan area that encompasses the Milwaukee District North and West Lines operated by Metra.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Metra Milwaukee District Target entity description: Metra Milwaukee District is a commuter rail service corridor in the Chicago metropolitan area that encompasses the Milwaukee District North and West Lines operated by Metra.
-
A.
Metra Milwaukee District West Line
The Metra Milwaukee District West Line is a commuter rail line in the Chicago metropolitan area that runs between Chicago Union Station and Elgin, serving numerous suburbs in Cook, DuPage, and Kane counties.
-
B.
Metra Milwaukee District North Line
The Metra Milwaukee District North Line is a commuter rail line in the Chicago metropolitan area that runs between Chicago Union Station and Fox Lake, Illinois, serving numerous northern suburbs along its route.
-
C.
Metra Rock Island District line
The Metra Rock Island District line is a commuter rail route in the Chicago metropolitan area that connects downtown Chicago with various southwest suburbs, including Tinley Park.
-
D.
Metra Heritage Corridor
The Metra Heritage Corridor is a commuter rail line in the Chicago metropolitan area that provides weekday service between Chicago Union Station and Joliet, Illinois, largely following the historic Illinois & Michigan Canal corridor.
-
E.
Metra Electric District line
The Metra Electric District line is a commuter rail line in the Chicago metropolitan area that runs from downtown Chicago to its southern suburbs, serving key destinations along the South Side and beyond.
- 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_69c688342f6c8190ad7eea6ba262db99 |
completed | March 27, 2026, 1:37 p.m. |
| NER | Named-entity recognition | batch_69c6d8e798c08190b1f494a2c1445514 |
completed | March 27, 2026, 7:22 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c748c79d2c819097462b4517dd76d7 |
completed | March 28, 2026, 3:19 a.m. |
| NEDg | Description generation | batch_69c749b9f4048190b7f8564f804e1231 |
completed | March 28, 2026, 3:23 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69c74a8b5af88190a60782e247129d1a |
completed | March 28, 2026, 3:27 a.m. |
Created at: March 27, 2026, 2:23 p.m.