Triple
T6472403
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Metra SouthWest Service |
E145985
|
entity |
| Predicate | usesStation |
P726
|
FINISHED |
| Object | Joliet Union Station |
E254858
|
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: Joliet Union Station | Statement: [Metra SouthWest Service, usesStation, Joliet Union Station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Joliet Union Station Context triple: [Metra SouthWest Service, usesStation, Joliet Union Station]
-
A.
Joliet Station
chosen
Joliet Station is a major commuter rail hub in Joliet, Illinois, serving as a key terminus and transfer point for multiple Chicago-area rail lines.
-
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.
Mundelein station
Mundelein station is a commuter rail stop in Mundelein, Illinois, serving passengers on Metra’s North Central Service line between Chicago and its northern suburbs.
-
D.
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.
-
E.
Waukegan station
Waukegan station is a commuter rail station in Waukegan, Illinois, serving as a key stop and northern terminus for many Metra Union Pacific North Line trains between Chicago and the northern suburbs.
- 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_69c66382f9ac81908d9cb444ab596d04 |
completed | March 27, 2026, 11:01 a.m. |
Created at: March 22, 2026, 4:50 p.m.