Triple
T1311281
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Metra Union Pacific West Line |
E27995
|
entity |
| Predicate | terminus |
P388
|
FINISHED |
| Object |
Elburn station
Elburn station is a commuter rail station in Elburn, Illinois, serving as the western endpoint of Metra’s Union Pacific West Line to Chicago.
|
E178413
|
NE FINISHED |
How this triple was built (4 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: Elburn station | Statement: [Metra Union Pacific West Line, terminus, Elburn station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Elburn station Context triple: [Metra Union Pacific West Line, terminus, Elburn station]
-
A.
Naperville station
Naperville station is a commuter rail station in Naperville, Illinois, serving as a major stop for Metra and Amtrak trains in the western suburbs of Chicago.
-
B.
Hinsdale station
Hinsdale station is a historic commuter rail stop in Hinsdale, Illinois, serving passengers on Metra’s BNSF Railway Line between Chicago and its western suburbs.
-
C.
Berwyn station
Berwyn station is a commuter rail stop in Berwyn, Illinois, served by Metra trains on the BNSF Railway Line connecting the suburb to downtown Chicago.
-
D.
Dempster–Skokie station
Dempster–Skokie station is a Chicago Transit Authority rapid transit station in Skokie, Illinois, serving as the northern endpoint of the Yellow Line and a key park-and-ride hub for commuters.
-
E.
Downers Grove Main Street station
Downers Grove Main Street station is a commuter rail station in Downers Grove, Illinois, serving as a key stop for suburban passengers traveling to and from downtown Chicago.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Elburn station Triple: [Metra Union Pacific West Line, terminus, Elburn station]
Generated description
Elburn station is a commuter rail station in Elburn, Illinois, serving as the western endpoint of Metra’s Union Pacific West Line to Chicago.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Elburn station Target entity description: Elburn station is a commuter rail station in Elburn, Illinois, serving as the western endpoint of Metra’s Union Pacific West Line to Chicago.
-
A.
Naperville station
Naperville station is a commuter rail station in Naperville, Illinois, serving as a major stop for Metra and Amtrak trains in the western suburbs of Chicago.
-
B.
Hinsdale station
Hinsdale station is a historic commuter rail stop in Hinsdale, Illinois, serving passengers on Metra’s BNSF Railway Line between Chicago and its western suburbs.
-
C.
Berwyn station
Berwyn station is a commuter rail stop in Berwyn, Illinois, served by Metra trains on the BNSF Railway Line connecting the suburb to downtown Chicago.
-
D.
Dempster–Skokie station
Dempster–Skokie station is a Chicago Transit Authority rapid transit station in Skokie, Illinois, serving as the northern endpoint of the Yellow Line and a key park-and-ride hub for commuters.
-
E.
Downers Grove Main Street station
Downers Grove Main Street station is a commuter rail station in Downers Grove, Illinois, serving as a key stop for suburban passengers traveling to and from downtown Chicago.
- F. None of above. chosen
Provenance (5 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_69a496d7d83481908f83085854e51328 |
completed | March 1, 2026, 7:43 p.m. |
| NER | Named-entity recognition | batch_69a4c1560f888190bdd9107b08395e0b |
completed | March 1, 2026, 10:44 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ad400aba788190840696eccfa258e1 |
completed | March 8, 2026, 9:23 a.m. |
| NEDg | Description generation | batch_69ad40bec60c8190afea6d0de9178dab |
completed | March 8, 2026, 9:26 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69ad4118e7b88190b779c82321dfde8c |
completed | March 8, 2026, 9:27 a.m. |
Created at: March 1, 2026, 7:51 p.m.