Triple
T4350155
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | CTA bus route 22 Clark |
E98003
|
entity |
| Predicate | connectsTo |
P845
|
FINISHED |
| Object | Metra commuter rail (various downtown stations) |
E29963
|
NE FINISHED |
How this triple was built (2 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 commuter rail (various downtown stations) | Statement: [CTA bus route 22 Clark, connectsTo, Metra commuter rail (various downtown stations)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Metra commuter rail (various downtown stations) Context triple: [CTA bus route 22 Clark, connectsTo, Metra commuter rail (various downtown stations)]
-
A.
Metra at Jefferson Park
Metra at Jefferson Park is a commuter rail station in Chicago’s Jefferson Park neighborhood that serves as a key transfer point between Metra trains and CTA transit services.
-
B.
Metra
chosen
Metra is the commuter rail system serving the Chicago metropolitan area, operating extensive routes that connect the city with its surrounding suburbs.
-
C.
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.
-
D.
CTA rail network
The CTA rail network is the rapid transit system serving Chicago and several surrounding suburbs, commonly known as the "L" and consisting of multiple color-coded lines operating on elevated, subway, and at-grade tracks.
-
E.
Metra at Forest Park
Metra at Forest Park is a commuter rail station in Forest Park, Illinois, serving Metra’s Union Pacific West Line and providing regional rail connections to and from Chicago.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69b3454965f881908c41190bb22f0e4b |
completed | March 12, 2026, 10:59 p.m. |
| NER | Named-entity recognition | batch_69b351a840248190b88c8a7be9158d25 |
completed | March 12, 2026, 11:52 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b5dbb01fb0819083fbdd194b2a96f8 |
completed | March 14, 2026, 10:05 p.m. |
Created at: March 12, 2026, 11:15 p.m.