Triple
T6472418
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Metra SouthWest Service |
E145985
|
entity |
| Predicate | connectsWith |
P37
|
FINISHED |
| Object | Heritage Corridor at Chicago Union Station |
E533993
|
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: Heritage Corridor at Chicago Union Station | Statement: [Metra SouthWest Service, connectsWith, Heritage Corridor at Chicago Union Station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Heritage Corridor at Chicago Union Station Context triple: [Metra SouthWest Service, connectsWith, Heritage Corridor at Chicago Union Station]
-
A.
Chicago Union Station
Chicago Union Station is a major intercity and commuter rail terminal in downtown Chicago that serves as a central hub for Amtrak and regional rail services.
-
B.
Springfield Union Station
Springfield Union Station is a historic intermodal transportation hub in downtown Springfield, Massachusetts, serving as a major regional center for rail and bus travel.
-
C.
Chicago and North Western Terminal (Ogilvie Transportation Center)
The Chicago and North Western Terminal, now known as Ogilvie Transportation Center, is a major commuter rail hub in downtown Chicago serving Metra trains and connecting the city’s suburbs with its central business district.
-
D.
Metra commuter rail services at Chicago Union Station
chosen
Metra commuter rail services at Chicago Union Station are a network of regional passenger trains that connect downtown Chicago with its surrounding suburbs via multiple lines terminating or passing through this major terminal.
-
E.
Sedgwick station (Chicago "L")
Sedgwick station is a historic Chicago "L" rapid transit stop on the city's North Side that has operated since the early 20th century.
- 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_69c008fec7408190af7b146dc63d9750 |
completed | March 22, 2026, 3:21 p.m. |
| NER | Named-entity recognition | batch_69c06a3188488190a1b7452ede91ba5e |
completed | March 22, 2026, 10:16 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c6539fe1e08190ae0004ed2113e319 |
completed | March 27, 2026, 9:53 a.m. |
Created at: March 22, 2026, 4:50 p.m.