Triple
T17151601
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Union Trust Building (PHLF Historic Landmark) |
E416233
|
entity |
| Predicate | isPartOf |
P10
|
FINISHED |
| Object | Central Business District of Pittsburgh |
E1151489
|
NE FINISHED |
How this triple was built (2 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: Central Business District of Pittsburgh | Statement: [Union Trust Building (PHLF Historic Landmark), isPartOf, Central Business District of Pittsburgh]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Central Business District of Pittsburgh Context triple: [Union Trust Building (PHLF Historic Landmark), isPartOf, Central Business District of Pittsburgh]
-
A.
Downtown Pittsburgh
chosen
Downtown Pittsburgh is the city’s central business district, known for its dense cluster of skyscrapers, cultural venues, and its location at the confluence of the Allegheny, Monongahela, and Ohio Rivers.
-
B.
Downtown Pittsburgh office district
Downtown Pittsburgh office district is the city’s central business core, characterized by dense clusters of high-rise office buildings, corporate headquarters, and financial institutions.
-
C.
Pittsburgh Innovation District
Pittsburgh Innovation District is a technology and research-focused urban hub in Pittsburgh that concentrates universities, startups, and established companies to drive innovation and economic development.
-
D.
Pittsburgh region
The Pittsburgh region is a historically significant industrial area in western Pennsylvania, long known as a major center of steel production and manufacturing.
-
E.
Pittsburgh North Shore riverfront
The Pittsburgh North Shore riverfront is a scenic urban waterfront area along the Allegheny and Ohio Rivers known for its walking trails, parks, and views of the downtown skyline.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69d886d279c081909f8ff1f743ddeb69 |
completed | April 10, 2026, 5:12 a.m. |
| NER | Named-entity recognition | batch_69e3f40775848190ada44742c0113ab3 |
completed | April 18, 2026, 9:13 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a016743eb688190bdb5d85ed144ca1d |
completed | May 11, 2026, 5:21 a.m. |
Created at: April 10, 2026, 5:36 a.m.