Triple
T800333
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Chicago Union Station |
E17115
|
entity |
| Predicate | railCode |
P18202
|
FINISHED |
| Object |
CHI
CHI is the Amtrak station code for Chicago Union Station, the primary intercity rail hub in Chicago, Illinois.
|
E94372
|
NE FINISHED |
How this triple was built (5 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: CHI | Statement: [Chicago Union Station, railCode, CHI]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: CHI Context triple: [Chicago Union Station, railCode, CHI]
-
A.
Chicago West
Chicago West is the daughter of American rapper and producer Kanye West and media personality Kim Kardashian.
-
B.
Chi-Town
Chi-Town is a popular nickname for the city of Chicago, reflecting its identity as a major cultural and economic hub in the United States.
-
C.
Chicago Card
Chicago Card was a contactless smart fare card once used for public transit payments in the Chicago area before being phased out in favor of the Ventra system.
-
D.
Gold Coast, Chicago
Gold Coast, Chicago is an affluent, historic Near North Side neighborhood known for its upscale shopping, luxury high-rises, and landmark mansions along Lake Michigan.
-
E.
West Chicago, Illinois
West Chicago, Illinois is a suburban city in DuPage County known for its historic railroad roots and diverse residential community west of 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: CHI Triple: [Chicago Union Station, railCode, CHI]
Generated description
CHI is the Amtrak station code for Chicago Union Station, the primary intercity rail hub in Chicago, Illinois.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: CHI Target entity description: CHI is the Amtrak station code for Chicago Union Station, the primary intercity rail hub in Chicago, Illinois.
-
A.
Chicago West
Chicago West is the daughter of American rapper and producer Kanye West and media personality Kim Kardashian.
-
B.
Chi-Town
Chi-Town is a popular nickname for the city of Chicago, reflecting its identity as a major cultural and economic hub in the United States.
-
C.
Chicago Card
Chicago Card was a contactless smart fare card once used for public transit payments in the Chicago area before being phased out in favor of the Ventra system.
-
D.
Gold Coast, Chicago
Gold Coast, Chicago is an affluent, historic Near North Side neighborhood known for its upscale shopping, luxury high-rises, and landmark mansions along Lake Michigan.
-
E.
West Chicago, Illinois
West Chicago, Illinois is a suburban city in DuPage County known for its historic railroad roots and diverse residential community west of Chicago.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: railCode Context triple: [Chicago Union Station, railCode, CHI]
-
A.
railroadCodeFor
chosen
Indicates that a specific railroad code is assigned to or used to identify a particular railroad entity.
-
B.
railwayLine
Indicates that there is a railway line connection or route associated with or passing through the referenced entity.
-
C.
railroadClass
Indicates the classification or category of a railroad according to an established system (e.g., by size, revenue, or regulatory status).
-
D.
railTracks
Indicates that one entity consists of, includes, or is associated with rail tracks used for guiding trains or rail vehicles.
-
E.
railwayLineType
Indicates the specific kind or classification of a railway line associated with an entity (e.g., main line, branch line, high-speed line).
- F. None of above.
Provenance (6 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_69a49378b9c48190adbf5f62e5b7aca1 |
completed | March 1, 2026, 7:28 p.m. |
| NER | Named-entity recognition | batch_69a4a7cb26dc8190bdd3a278b8695873 |
completed | March 1, 2026, 8:55 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a67f02a1ec81909027b4c515f107f1 |
completed | March 3, 2026, 6:26 a.m. |
| NEDg | Description generation | batch_69a67f5a246481908bde953b245a6b5e |
completed | March 3, 2026, 6:27 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a6808fe5748190b95959ee23ee6241 |
completed | March 3, 2026, 6:32 a.m. |
| PD | Predicate disambiguation | batch_69a4a5133bf88190a613e96d1f7cffa7 |
completed | March 1, 2026, 8:44 p.m. |
Created at: March 1, 2026, 7:38 p.m.