Triple
T21637315
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Metra commuter rail services at Chicago Union Station |
E533993
|
entity |
| Predicate | line |
P1293
|
FINISHED |
| Object | BNSF Line |
—
|
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: BNSF Line | Statement: [Metra commuter rail services at Chicago Union Station, line, BNSF Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: BNSF Line Context triple: [Metra commuter rail services at Chicago Union Station, line, BNSF Line]
-
A.
BNSF Railway line
chosen
The BNSF Railway line is a major freight and passenger rail corridor operated by BNSF Railway that runs through multiple Midwestern and Western states in the United States.
-
B.
BNSF Hi Line Subdivision
BNSF Hi Line Subdivision is a major BNSF Railway main line in northern Montana that carries significant freight and Amtrak passenger traffic across the region.
-
C.
BNSF Railway Monticello Subdivision
The BNSF Railway Monticello Subdivision is a freight and passenger rail corridor in Minnesota that carries BNSF trains as well as Metro Transit's Northstar commuter rail service between Minneapolis and its northwestern suburbs.
-
D.
BNSF Scenic Subdivision
The BNSF Scenic Subdivision is a major BNSF Railway line through Washington state’s Cascade Mountains, known for its steep grades, tunnels, and use by both freight and passenger trains.
-
E.
BNSF Seligman Subdivision
BNSF Seligman Subdivision is a major freight and passenger rail line in northern Arizona that forms part of the transcontinental route between Southern California and the Midwest.
- 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.