Triple
T7335804
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Downers Grove Main Street station |
E169123
|
entity |
| Predicate | servesLine |
P839
|
FINISHED |
| Object |
Chicago Union Station – Aurora route
The Chicago Union Station – Aurora route is a Metra BNSF Railway commuter rail line in the Chicago metropolitan area that connects downtown Chicago’s Union Station with the western suburb of Aurora.
|
E657837
|
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: Chicago Union Station – Aurora route | Statement: [Downers Grove Main Street station, servesLine, Chicago Union Station – Aurora route]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Chicago Union Station – Aurora route Context triple: [Downers Grove Main Street station, servesLine, Chicago Union Station – Aurora route]
-
A.
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.
-
B.
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.
-
C.
IND 63rd Street Line
The IND 63rd Street Line is a New York City Subway line in Manhattan and Queens that carries F and sometimes other services through the 63rd Street Tunnel.
-
D.
Addison (Brown Line)
Addison is an elevated Chicago 'L' station on the CTA's Brown Line serving the North Center/Lincoln Square area.
-
E.
University City Boulevard station
University City Boulevard station is a light rail stop on Charlotte's LYNX Blue Line serving the University City area near the University of North Carolina at Charlotte.
- 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: Chicago Union Station – Aurora route Triple: [Downers Grove Main Street station, servesLine, Chicago Union Station – Aurora route]
Generated description
The Chicago Union Station – Aurora route is a Metra BNSF Railway commuter rail line in the Chicago metropolitan area that connects downtown Chicago’s Union Station with the western suburb of Aurora.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Chicago Union Station – Aurora route Target entity description: The Chicago Union Station – Aurora route is a Metra BNSF Railway commuter rail line in the Chicago metropolitan area that connects downtown Chicago’s Union Station with the western suburb of Aurora.
-
A.
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.
-
B.
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.
-
C.
IND 63rd Street Line
The IND 63rd Street Line is a New York City Subway line in Manhattan and Queens that carries F and sometimes other services through the 63rd Street Tunnel.
-
D.
Addison (Brown Line)
Addison is an elevated Chicago 'L' station on the CTA's Brown Line serving the North Center/Lincoln Square area.
-
E.
University City Boulevard station
University City Boulevard station is a light rail stop on Charlotte's LYNX Blue Line serving the University City area near the University of North Carolina at Charlotte.
- 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_69c68a568a6481908f11e20db7bc8446 |
completed | March 27, 2026, 1:47 p.m. |
| NER | Named-entity recognition | batch_69c6f0c38d6c81908a57ef1eea0e4951 |
completed | March 27, 2026, 9:04 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c7ef22d6ac819087f05d6e6787509a |
completed | March 28, 2026, 3:09 p.m. |
| NEDg | Description generation | batch_69c7f58ddcf88190bfc15f673083c009 |
completed | March 28, 2026, 3:36 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69c7f615d6d48190933ac515874299b9 |
completed | March 28, 2026, 3:39 p.m. |
Created at: March 27, 2026, 3:04 p.m.