Triple
T21637320
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Metra commuter rail services at Chicago Union Station |
E533993
|
entity |
| Predicate | line |
P1293
|
FINISHED |
| Object | SouthWest Service |
—
|
NE NERFINISHED |
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: SouthWest Service | Statement: [Metra commuter rail services at Chicago Union Station, line, SouthWest Service]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: SouthWest Service Context triple: [Metra commuter rail services at Chicago Union Station, line, SouthWest Service]
-
A.
SouthWest Service line
chosen
The SouthWest Service line is a Metra commuter rail route in the Chicago metropolitan area that provides passenger service between downtown Chicago and southwestern suburbs.
-
B.
Westside Express Service
Westside Express Service is a commuter rail line in the Portland, Oregon metropolitan area that connects suburban communities along the region’s west side.
-
C.
Southwestern Limited
Southwestern Limited was a named passenger train operated by the New York Central Railroad that provided long-distance service to the southwestern regions of its network.
-
D.
South West Company
South West Company was a 19th-century American fur trading enterprise established by prominent merchant and fur magnate John Jacob Astor.
-
E.
SOUTHWEST
SOUTHWEST is the air traffic control callsign used by Southwest Airlines, a major U.S. low-cost carrier.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (2 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_69e0c465ae7481908577b7209fdb2a77 |
completed | April 16, 2026, 11:13 a.m. |
| NER | Named-entity recognition | batch_69ef538eef0481908f5bf0e27f8e054d |
completed | April 27, 2026, 12:16 p.m. |
Created at: April 16, 2026, 6:35 p.m.