Triple
T6472414
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Metra SouthWest Service |
E145985
|
entity |
| Predicate | connectsWith |
P37
|
FINISHED |
| Object | BNSF Railway Line at Chicago Union Station |
E27639
|
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: BNSF Railway Line at Chicago Union Station | Statement: [Metra SouthWest Service, connectsWith, BNSF Railway Line at Chicago Union Station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: BNSF Railway Line at Chicago Union Station Context triple: [Metra SouthWest Service, connectsWith, BNSF Railway Line at Chicago Union Station]
-
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.
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.
-
C.
Lincoln station
Lincoln station is a commuter rail stop in Lincoln, Massachusetts, serving passengers on the MBTA's Fitchburg Line.
-
D.
Colfax Amtrak station
Colfax Amtrak station is a passenger rail station in the historic Gold Rush town of Colfax, California, serving Amtrak’s California Zephyr route.
-
E.
Chicago & North Western West Line
The Chicago & North Western West Line was a historic commuter rail route in the Chicago area that later became part of Metra’s Union Pacific West Line.
- 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.