Triple
T2197226
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | PCC&StL |
E50402
|
entity |
| Predicate | servedCorridor |
P2566
|
FINISHED |
| Object |
Pittsburgh–Cincinnati
Pittsburgh–Cincinnati refers to the intercity rail corridor linking Pittsburgh, Pennsylvania, and Cincinnati, Ohio, historically used by passenger and freight trains.
|
E243556
|
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: Pittsburgh–Cincinnati | Statement: [PCC&StL, servedCorridor, Pittsburgh–Cincinnati]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Pittsburgh–Cincinnati Context triple: [PCC&StL, servedCorridor, Pittsburgh–Cincinnati]
-
A.
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.
-
B.
Pittsburgh–Chicago route
The Pittsburgh–Chicago route was a major Pennsylvania Railroad passenger and freight corridor linking the industrial centers of Pittsburgh, Pennsylvania, and Chicago, Illinois.
-
C.
Cleveland
Cleveland is a common English surname most prominently associated with Grover Cleveland, the 22nd and 24th president of the United States.
-
D.
Cleveland
Cleveland is a major city in the U.S. state of Ohio, known for its industrial history, cultural institutions like the Rock and Roll Hall of Fame, and its location on the southern shore of Lake Erie.
-
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. 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: Pittsburgh–Cincinnati Triple: [PCC&StL, servedCorridor, Pittsburgh–Cincinnati]
Generated description
Pittsburgh–Cincinnati refers to the intercity rail corridor linking Pittsburgh, Pennsylvania, and Cincinnati, Ohio, historically used by passenger and freight trains.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Pittsburgh–Cincinnati Target entity description: Pittsburgh–Cincinnati refers to the intercity rail corridor linking Pittsburgh, Pennsylvania, and Cincinnati, Ohio, historically used by passenger and freight trains.
-
A.
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.
-
B.
Pittsburgh–Chicago route
The Pittsburgh–Chicago route was a major Pennsylvania Railroad passenger and freight corridor linking the industrial centers of Pittsburgh, Pennsylvania, and Chicago, Illinois.
-
C.
Cleveland
Cleveland is a common English surname most prominently associated with Grover Cleveland, the 22nd and 24th president of the United States.
-
D.
Cleveland
Cleveland is a major city in the U.S. state of Ohio, known for its industrial history, cultural institutions like the Rock and Roll Hall of Fame, and its location on the southern shore of Lake Erie.
-
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. chosen
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_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_69ae5db7af9881908348ce1ad35f247a |
completed | March 9, 2026, 5:42 a.m. |
| NEDg | Description generation | batch_69ae61901ae481908b03844aa300cc33 |
completed | March 9, 2026, 5:58 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69ae620812848190814c4c614e8834d1 |
completed | March 9, 2026, 6 a.m. |
Created at: March 4, 2026, 7:46 p.m.