Triple
T2903940
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Union Station (Pittsburgh) |
E62718
|
entity |
| Predicate | locatedIn |
P40
|
FINISHED |
| Object |
Downtown Pittsburgh
Downtown Pittsburgh is the city’s central business district, known for its dense cluster of skyscrapers, cultural institutions, and historic architecture at the confluence of the Allegheny, Monongahela, and Ohio Rivers.
|
E19280
|
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: Downtown Pittsburgh | Statement: [Union Station (Pittsburgh), locatedIn, Downtown Pittsburgh]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Downtown Pittsburgh Context triple: [Union Station (Pittsburgh), locatedIn, Downtown Pittsburgh]
-
A.
Pittsburgh, Pennsylvania
Pittsburgh, Pennsylvania is a major U.S. city in western Pennsylvania known for its historic steel industry, numerous bridges, and strong educational and technology sectors.
-
B.
East Pittsburgh, Pennsylvania
East Pittsburgh, Pennsylvania is a small borough in Allegheny County near Pittsburgh, historically known for its role in the region’s steel and industrial economy.
-
C.
Duquesne, Pennsylvania
Duquesne, Pennsylvania is a small industrial city along the Monongahela River near Pittsburgh, historically known as a major steel-producing community in the American Rust Belt.
-
D.
East End of Pittsburgh
The East End of Pittsburgh is a large, historically diverse urban area of the city known for its residential neighborhoods, cultural institutions, and commercial districts including places like Oakland, Shadyside, and Squirrel Hill.
-
E.
Carnegie, Pennsylvania
Carnegie, Pennsylvania is a small borough in Allegheny County near Pittsburgh, historically tied to the region’s steel industry and local immigrant communities.
- 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: Downtown Pittsburgh Triple: [Union Station (Pittsburgh), locatedIn, Downtown Pittsburgh]
Generated description
Downtown Pittsburgh is the city’s central business district, known for its dense cluster of skyscrapers, cultural institutions, and historic architecture at the confluence of the Allegheny, Monongahela, and Ohio Rivers.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Downtown Pittsburgh Target entity description: Downtown Pittsburgh is the city’s central business district, known for its dense cluster of skyscrapers, cultural institutions, and historic architecture at the confluence of the Allegheny, Monongahela, and Ohio Rivers.
-
A.
Pittsburgh, Pennsylvania
chosen
Pittsburgh, Pennsylvania is a major U.S. city in western Pennsylvania known for its historic steel industry, numerous bridges, and strong educational and technology sectors.
-
B.
East Pittsburgh, Pennsylvania
East Pittsburgh, Pennsylvania is a small borough in Allegheny County near Pittsburgh, historically known for its role in the region’s steel and industrial economy.
-
C.
Duquesne, Pennsylvania
Duquesne, Pennsylvania is a small industrial city along the Monongahela River near Pittsburgh, historically known as a major steel-producing community in the American Rust Belt.
-
D.
East End of Pittsburgh
The East End of Pittsburgh is a large, historically diverse urban area of the city known for its residential neighborhoods, cultural institutions, and commercial districts including places like Oakland, Shadyside, and Squirrel Hill.
-
E.
Carnegie, Pennsylvania
Carnegie, Pennsylvania is a small borough in Allegheny County near Pittsburgh, historically tied to the region’s steel industry and local immigrant communities.
- F. None of above.
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_69ab4c3e070c8190b78d3d2c005876dd |
completed | March 6, 2026, 9:50 p.m. |
| NER | Named-entity recognition | batch_69abe0b5546c8190852d9a454e41eee6 |
completed | March 7, 2026, 8:24 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b2358bd4cc81908970e1d3cdc95b5d |
completed | March 12, 2026, 3:39 a.m. |
| NEDg | Description generation | batch_69b236e4efe08190ade7c1cc4b941639 |
completed | March 12, 2026, 3:45 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69b2375a75488190b3f2215c85d43f9c |
completed | March 12, 2026, 3:47 a.m. |
Created at: March 6, 2026, 10:11 p.m.