Triple
T21637273
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Amtrak Metropolitan Lounge |
E533992
|
entity |
| Predicate | adjacentTo |
P224
|
FINISHED |
| Object | Amtrak concourse at Chicago Union Station |
—
|
NE NERFINISHED |
How this triple was built (3 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: Amtrak concourse at Chicago Union Station | Statement: [Amtrak Metropolitan Lounge, adjacentTo, Amtrak concourse at Chicago Union Station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Amtrak concourse at Chicago Union Station Context triple: [Amtrak Metropolitan Lounge, adjacentTo, Amtrak concourse at Chicago Union Station]
-
A.
Amtrak ticket office
An Amtrak ticket office is a staffed service location where passengers can purchase train tickets, make reservations, and obtain travel information for Amtrak rail services.
-
B.
Amtrak tracks at Penn Station
Amtrak tracks at Penn Station are the below-ground rail lines and platforms in Midtown Manhattan that serve Amtrak’s intercity trains and are accessed in part through the adjacent Moynihan Train Hall.
-
C.
Amtrak services at Chicago Union Station
Amtrak services at Chicago Union Station comprise a major hub of intercity passenger rail routes connecting Chicago with numerous destinations across the United States.
-
D.
Amtrak at Back Bay station
Amtrak at Back Bay station refers to the intercity passenger rail services, including routes like the Northeast Regional and Acela, that stop at Boston’s centrally located Back Bay transportation hub.
-
E.
Colfax Amtrak station
Colfax Amtrak station is a passenger rail station in the historic Gold Rush town of Colfax, California, serving Amtrak’s California Zephyr route.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Amtrak concourse at Chicago Union Station Target entity description: The Amtrak concourse at Chicago Union Station is the primary passenger circulation and boarding area for Amtrak trains in Chicago, connecting ticketing, waiting spaces, and platforms within the historic rail hub.
-
A.
Amtrak ticket office
An Amtrak ticket office is a staffed service location where passengers can purchase train tickets, make reservations, and obtain travel information for Amtrak rail services.
-
B.
Amtrak tracks at Penn Station
Amtrak tracks at Penn Station are the below-ground rail lines and platforms in Midtown Manhattan that serve Amtrak’s intercity trains and are accessed in part through the adjacent Moynihan Train Hall.
-
C.
Amtrak services at Chicago Union Station
chosen
Amtrak services at Chicago Union Station comprise a major hub of intercity passenger rail routes connecting Chicago with numerous destinations across the United States.
-
D.
Amtrak at Back Bay station
Amtrak at Back Bay station refers to the intercity passenger rail services, including routes like the Northeast Regional and Acela, that stop at Boston’s centrally located Back Bay transportation hub.
-
E.
Colfax Amtrak station
Colfax Amtrak station is a passenger rail station in the historic Gold Rush town of Colfax, California, serving Amtrak’s California Zephyr route.
- F. None of above.
Provenance (2 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_69e0c465ae7481908577b7209fdb2a77 |
completed | April 16, 2026, 11:13 a.m. |
| NER | Named-entity recognition | batch_69ef538eef0481908f5bf0e27f8e054d |
completed | April 27, 2026, 12:16 p.m. |
Created at: April 16, 2026, 6:35 p.m.