Triple
T3543550
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | CTA Blue Line |
E74942
|
entity |
| Predicate | terminus |
P388
|
FINISHED |
| Object |
O'Hare station
O'Hare station is a Chicago Transit Authority Blue Line rapid transit station located at O'Hare International Airport, serving as the primary rail link between the airport and downtown Chicago.
|
E367317
|
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: O'Hare station | Statement: [CTA Blue Line, terminus, O'Hare station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: O'Hare station Context triple: [CTA Blue Line, terminus, O'Hare station]
-
A.
Cermak–McCormick Place station
Cermak–McCormick Place station is a Chicago 'L' rapid transit stop on the Near South Side that provides access to the McCormick Place convention center and surrounding neighborhood.
-
B.
Joliet Station
Joliet Station is a major commuter rail hub in Joliet, Illinois, serving as a key terminus and transfer point for multiple Chicago-area rail lines.
-
C.
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.
-
D.
Harlem (O'Hare branch) station
Harlem (O'Hare branch) station is a Chicago Transit Authority rapid transit stop on the Blue Line serving the city's Northwest Side near the Kennedy Expressway.
-
E.
Westmont station
Westmont station is a commuter rail stop in Westmont, Illinois, serving Metra’s BNSF Railway Line between Chicago and its western suburbs.
- 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: O'Hare station Triple: [CTA Blue Line, terminus, O'Hare station]
Generated description
O'Hare station is a Chicago Transit Authority Blue Line rapid transit station located at O'Hare International Airport, serving as the primary rail link between the airport and downtown Chicago.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: O'Hare station Target entity description: O'Hare station is a Chicago Transit Authority Blue Line rapid transit station located at O'Hare International Airport, serving as the primary rail link between the airport and downtown Chicago.
-
A.
Cermak–McCormick Place station
Cermak–McCormick Place station is a Chicago 'L' rapid transit stop on the Near South Side that provides access to the McCormick Place convention center and surrounding neighborhood.
-
B.
Joliet Station
Joliet Station is a major commuter rail hub in Joliet, Illinois, serving as a key terminus and transfer point for multiple Chicago-area rail lines.
-
C.
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.
-
D.
Harlem (O'Hare branch) station
Harlem (O'Hare branch) station is a Chicago Transit Authority rapid transit stop on the Blue Line serving the city's Northwest Side near the Kennedy Expressway.
-
E.
Westmont station
Westmont station is a commuter rail stop in Westmont, Illinois, serving Metra’s BNSF Railway Line between Chicago and its western suburbs.
- 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_69ad85d274cc8190ab59c97298a1cfbf |
completed | March 8, 2026, 2:21 p.m. |
| NER | Named-entity recognition | batch_69adbf752dd481909226044ffe595338 |
completed | March 8, 2026, 6:27 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b38bdd0cb4819086119b54c2708850 |
completed | March 13, 2026, 4 a.m. |
| NEDg | Description generation | batch_69b38cb6a2188190b68f4903144a0e51 |
completed | March 13, 2026, 4:04 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69b39062a10c8190bc227c02cf4f3ab1 |
completed | March 13, 2026, 4:19 a.m. |
Created at: March 8, 2026, 3:20 p.m.