Triple
T6881582
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Metra Milwaukee District North Line |
E158809
|
entity |
| Predicate | connectsWith |
P37
|
FINISHED |
| Object | Metra North Central Service |
E425259
|
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 North Central Service | Statement: [Metra Milwaukee District North Line, connectsWith, Metra North Central Service]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Metra North Central Service Context triple: [Metra Milwaukee District North Line, connectsWith, Metra North Central Service]
-
A.
Metra North Central Service
chosen
Metra North Central Service is a commuter rail line in the Chicago metropolitan area that runs between downtown Chicago and northern suburbs, primarily serving communities along the I-94 and I-294 corridors.
-
B.
Metra SouthWest Service
Metra SouthWest Service is a commuter rail line in the Chicago metropolitan area that connects downtown Chicago with southwestern suburbs including Orland Park, Illinois.
-
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 Rock Island District line
The Metra Rock Island District line is a commuter rail route in the Chicago metropolitan area that connects downtown Chicago with various southwest suburbs, including Tinley Park.
-
E.
Metra
Metra is the commuter rail system serving the Chicago metropolitan area, operating extensive routes that connect the city with its surrounding 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_69c688342f6c8190ad7eea6ba262db99 |
completed | March 27, 2026, 1:37 p.m. |
| NER | Named-entity recognition | batch_69c6d8e798c08190b1f494a2c1445514 |
completed | March 27, 2026, 7:22 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c742c999cc8190a14aa0ae6c7a1f54 |
completed | March 28, 2026, 2:54 a.m. |
Created at: March 27, 2026, 2:23 p.m.