Triple
T9415309
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Melrose Park station |
E227002
|
entity |
| Predicate | category |
P87
|
FINISHED |
| Object | Union Pacific West Line stations |
E199279
|
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: Union Pacific West Line stations | Statement: [Melrose Park station, category, Union Pacific West Line stations]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Union Pacific West Line stations Context triple: [Melrose Park station, category, Union Pacific West Line stations]
-
A.
Union Pacific mainline routes
Union Pacific mainline routes are the railroad’s primary high-capacity freight corridors that carry long-distance trains across its network, including through major facilities like Bailey Yard.
-
B.
Union Pacific West Line
chosen
The Union Pacific West Line is a commuter rail route in the Chicago metropolitan area that runs between downtown Chicago and western suburbs, providing daily passenger service as part of the Metra system.
-
C.
Union Pacific Valley Subdivision
The Union Pacific Valley Subdivision is a railroad line operated by Union Pacific that serves as a key freight corridor within its regional rail network.
-
D.
Union Pacific–Central Pacific rail connection
The Union Pacific–Central Pacific rail connection was the historic junction point in Utah where the first U.S. transcontinental railroad was completed in 1869, linking eastern and western rail networks.
-
E.
Union Pacific Yard
Union Pacific Yard is a rail yard facility operated by the Union Pacific Railroad for organizing, storing, and dispatching freight trains and rolling stock.
- 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_69ca84359e7c819091148ba4b670e436 |
completed | March 30, 2026, 2:09 p.m. |
| NER | Named-entity recognition | batch_69cd68c7bd648190b17f082883c98239 |
completed | April 1, 2026, 6:49 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d107baad74819090a746c06feb28ac |
completed | April 4, 2026, 12:44 p.m. |
Created at: March 30, 2026, 7:48 p.m.