Triple
T18305509
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Rockville Bridge |
E438471
|
entity |
| Predicate | hasCategory |
P87
|
FINISHED |
| Object | Pennsylvania Railroad bridges |
—
|
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: Pennsylvania Railroad bridges | Statement: [Rockville Bridge, hasCategory, Pennsylvania Railroad bridges]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Pennsylvania Railroad bridges Context triple: [Rockville Bridge, hasCategory, Pennsylvania Railroad bridges]
-
A.
Lehigh Valley Railroad Bridge (former)
The Lehigh Valley Railroad Bridge (former) was a now-demolished rail bridge that once carried Lehigh Valley Railroad trains across Newark Bay in New Jersey.
-
B.
Delaware River bridge system
The Delaware River bridge system is a network of major highway and commuter bridges that span the Delaware River, connecting New Jersey, Pennsylvania, and Delaware to support regional transportation and commerce.
-
C.
Bollman Truss Railroad Bridge
The Bollman Truss Railroad Bridge is a historic 19th-century iron railroad bridge in Savage, Maryland, notable as one of the earliest surviving examples of a cast- and wrought-iron truss bridge in the United States.
-
D.
Starrucca Viaduct, Pennsylvania
Starrucca Viaduct in Pennsylvania is a historic 19th-century stone railroad bridge renowned for its impressive series of arches and its prominence in American landscape art.
-
E.
CSX Railroad Bridge
The CSX Railroad Bridge is a freight rail bridge in Washington, D.C., carrying CSX Transportation trains across the Anacostia River as part of a major East Coast rail corridor.
- 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: Pennsylvania Railroad bridges Target entity description: Pennsylvania Railroad bridges are a group of historically significant railroad bridges in the United States that were designed, built, or operated by the former Pennsylvania Railroad, often noted for their large scale and engineering innovation.
-
A.
Lehigh Valley Railroad Bridge (former)
The Lehigh Valley Railroad Bridge (former) was a now-demolished rail bridge that once carried Lehigh Valley Railroad trains across Newark Bay in New Jersey.
-
B.
Delaware River bridge system
The Delaware River bridge system is a network of major highway and commuter bridges that span the Delaware River, connecting New Jersey, Pennsylvania, and Delaware to support regional transportation and commerce.
-
C.
Bollman Truss Railroad Bridge
The Bollman Truss Railroad Bridge is a historic 19th-century iron railroad bridge in Savage, Maryland, notable as one of the earliest surviving examples of a cast- and wrought-iron truss bridge in the United States.
-
D.
Starrucca Viaduct, Pennsylvania
Starrucca Viaduct in Pennsylvania is a historic 19th-century stone railroad bridge renowned for its impressive series of arches and its prominence in American landscape art.
-
E.
CSX Railroad Bridge
The CSX Railroad Bridge is a freight rail bridge in Washington, D.C., carrying CSX Transportation trains across the Anacostia River as part of a major East Coast rail corridor.
- 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_69d8b915e3e881909125d760c15d0c29 |
completed | April 10, 2026, 8:47 a.m. |
| NER | Named-entity recognition | batch_69e50183394081909b86cefaaa0a3aa8 |
completed | April 19, 2026, 4:23 p.m. |
Created at: April 10, 2026, 10:35 a.m.