Triple
T2197227
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | PCC&StL |
E50402
|
entity |
| Predicate | servedCorridor |
P2566
|
FINISHED |
| Object | Pittsburgh–Chicago |
E2988
|
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: Pittsburgh–Chicago | Statement: [PCC&StL, servedCorridor, Pittsburgh–Chicago]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Pittsburgh–Chicago Context triple: [PCC&StL, servedCorridor, Pittsburgh–Chicago]
-
A.
Pittsburgh–Cincinnati
Pittsburgh–Cincinnati refers to the intercity rail corridor linking Pittsburgh, Pennsylvania, and Cincinnati, Ohio, historically used by passenger and freight trains.
-
B.
Pittsburgh–Chicago route
chosen
The Pittsburgh–Chicago route was a major Pennsylvania Railroad passenger and freight corridor linking the industrial centers of Pittsburgh, Pennsylvania, and Chicago, Illinois.
-
C.
New York–Philadelphia–Pittsburgh–Chicago
New York–Philadelphia–Pittsburgh–Chicago is a major intercity rail corridor linking the U.S. East Coast with the Midwest through several of the nation’s largest cities.
-
D.
Cincinnati
Cincinnati is a major city in southwestern Ohio, known for its historic architecture, riverfront location on the Ohio River, and role as a regional economic and cultural center.
-
E.
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.
- 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_69a88b044ab48190add007487680f009 |
completed | March 4, 2026, 7:41 p.m. |
| NER | Named-entity recognition | batch_69abbf79f3e08190b56e9d7c0ff27237 |
completed | March 7, 2026, 6:02 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ae6544c000819095aa63be5b1ed4d6 |
completed | March 9, 2026, 6:14 a.m. |
Created at: March 4, 2026, 7:46 p.m.