Triple
T1925732
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Downers Grove, Illinois |
E40826
|
entity |
| Predicate | commuterRailServedBy |
P14525
|
FINISHED |
| Object | Metra BNSF Railway Line |
E27639
|
NE FINISHED |
How this triple was built (3 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 BNSF Railway Line | Statement: [Downers Grove, Illinois, commuterRailServedBy, Metra BNSF Railway Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Metra BNSF Railway Line Context triple: [Downers Grove, Illinois, commuterRailServedBy, Metra BNSF Railway Line]
-
A.
Metra BNSF Railway Line
chosen
The Metra BNSF Railway Line is a major Chicago-area commuter rail route running between Chicago Union Station and Aurora, Illinois, primarily along tracks owned by BNSF Railway.
-
B.
Metra Union Pacific West Line
The Metra Union Pacific West Line is a commuter rail line in the Chicago metropolitan area that runs between downtown Chicago and western suburbs, including communities in DuPage County.
-
C.
Metra Union Pacific North Line
The Metra Union Pacific North Line is a commuter rail line in the Chicago metropolitan area that runs between downtown Chicago and its northern suburbs along the Union Pacific Railroad’s North Line.
-
D.
Metra Union Pacific Northwest Line
The Metra Union Pacific Northwest Line is a commuter rail line in the Chicago metropolitan area that provides service between downtown Chicago and its northwestern suburbs, including parts of McHenry County, Illinois.
-
E.
Golden Valley Line
The Golden Valley Line is a regional railway route in England running through the scenic Golden Valley between Gloucester and Swindon, serving towns such as Stroud and Kemble.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: commuterRailServedBy Context triple: [Downers Grove, Illinois, commuterRailServedBy, Metra BNSF Railway Line]
-
A.
commuterRailMode
Indicates that the relationship involves travel or transportation specifically by commuter rail as the mode of transit between the related entities.
-
B.
transportationServedBy
chosen
Indicates that a transportation facility, route, or area is provided service or coverage by a specific transportation provider or mode.
-
C.
subwayServices
Indicates that one entity provides or operates subway transportation services for another entity or area.
-
D.
servedByRailroad
Indicates that a location or facility is provided with transportation or service by a railroad line or company.
-
E.
hasLightRailSystem
Indicates that a place possesses and operates a light rail transit system.
- F. None of above.
Provenance (4 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_69a8864711648190b07bed24ed76258e |
completed | March 4, 2026, 7:21 p.m. |
| NER | Named-entity recognition | batch_69abb260da088190ac53bfc9437e112b |
completed | March 7, 2026, 5:06 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ae1fce685081909038245bc0c1b4a6 |
completed | March 9, 2026, 1:18 a.m. |
| PD | Predicate disambiguation | batch_69abafeec6f881909d47acb966683279 |
completed | March 7, 2026, 4:56 a.m. |
Created at: March 4, 2026, 7:35 p.m.