Triple
T21459701
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Washington Junction station |
E529437
|
entity |
| Predicate | category |
P87
|
FINISHED |
| Object | Pittsburgh Regional Transit stations |
—
|
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: Pittsburgh Regional Transit stations | Statement: [Washington Junction station, category, Pittsburgh Regional Transit stations]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Pittsburgh Regional Transit stations Context triple: [Washington Junction station, category, Pittsburgh Regional Transit stations]
-
A.
Allegheny Station (Pittsburgh Light Rail)
Allegheny Station is a Pittsburgh Light Rail stop on the North Shore that serves major nearby destinations including Acrisure Stadium.
-
B.
North Side Station (Pittsburgh Light Rail)
North Side Station is a Pittsburgh Light Rail stop that provides access to the city’s North Shore attractions, including stadiums, entertainment venues, and riverfront areas.
-
C.
Pittsburgh Light Rail subway trunk
The Pittsburgh Light Rail subway trunk is the central underground segment of Pittsburgh’s light rail system that carries trains through the city’s downtown core.
-
D.
Pittsburgh Regional Transit East Busway network
The Pittsburgh Regional Transit East Busway network is a dedicated bus rapid transit corridor in Pittsburgh that provides fast, limited-stop service between the city’s eastern neighborhoods and downtown.
-
E.
Pittsburgh Regional Transit
Pittsburgh Regional Transit is the primary public transportation agency serving the Pittsburgh metropolitan area, operating buses, light rail, and other transit services across the region.
- 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: Pittsburgh Regional Transit stations Target entity description: Pittsburgh Regional Transit stations are public transportation stops and hubs in the Pittsburgh metropolitan area that serve the region’s light rail and bus networks.
-
A.
Allegheny Station (Pittsburgh Light Rail)
Allegheny Station is a Pittsburgh Light Rail stop on the North Shore that serves major nearby destinations including Acrisure Stadium.
-
B.
North Side Station (Pittsburgh Light Rail)
North Side Station is a Pittsburgh Light Rail stop that provides access to the city’s North Shore attractions, including stadiums, entertainment venues, and riverfront areas.
-
C.
Pittsburgh Light Rail subway trunk
The Pittsburgh Light Rail subway trunk is the central underground segment of Pittsburgh’s light rail system that carries trains through the city’s downtown core.
-
D.
Pittsburgh Regional Transit East Busway network
The Pittsburgh Regional Transit East Busway network is a dedicated bus rapid transit corridor in Pittsburgh that provides fast, limited-stop service between the city’s eastern neighborhoods and downtown.
-
E.
Pittsburgh Regional Transit
Pittsburgh Regional Transit is the primary public transportation agency serving the Pittsburgh metropolitan area, operating buses, light rail, and other transit services across the region.
- F. None of above. chosen
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_69e0c458133481908ae8b41a12c4edec |
completed | April 16, 2026, 11:13 a.m. |
| NER | Named-entity recognition | batch_69e9e9ed36c08190a5178b2308aca8da |
completed | April 23, 2026, 9:44 a.m. |
Created at: April 16, 2026, 6:08 p.m.