Triple
T398925
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Pittsburgh, Cincinnati, Chicago and St. Louis Railroad |
E9234
|
entity |
| Predicate | notableRouteFeature |
P10970
|
FINISHED |
| Object |
Panhandle Bridge at Pittsburgh
The Panhandle Bridge at Pittsburgh is a historic railroad bridge over the Monongahela River that once carried major Pennsylvania Railroad and successor passenger trains into downtown Pittsburgh.
|
E75184
|
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: Panhandle Bridge at Pittsburgh | Statement: [Pittsburgh, Cincinnati, Chicago and St. Louis Railroad, notableRouteFeature, Panhandle Bridge at Pittsburgh]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Panhandle Bridge at Pittsburgh Context triple: [Pittsburgh, Cincinnati, Chicago and St. Louis Railroad, notableRouteFeature, Panhandle Bridge at Pittsburgh]
-
A.
Cincinnati–Covington Bridge
The Cincinnati–Covington Bridge is a historic 19th-century suspension bridge over the Ohio River, renowned as a pioneering precursor to the Brooklyn Bridge and a major engineering achievement of its era.
-
B.
Sagamore Bridge
Sagamore Bridge is a major highway bridge in Massachusetts that carries traffic over the Cape Cod Canal, serving as one of the primary gateways to Cape Cod.
-
C.
Mark Twain Memorial Bridge
The Mark Twain Memorial Bridge is a highway bridge over the Mississippi River near Hannibal, Missouri, named in honor of the famed American author Mark Twain.
-
D.
Willis Avenue Bridge
The Willis Avenue Bridge is a swing bridge in New York City that carries traffic between Manhattan and the Bronx.
-
E.
Grenville Dodge Memorial Bridge
The Grenville Dodge Memorial Bridge is a major highway bridge in the Omaha–Council Bluffs area that carries Interstate 480 across the Missouri River between Nebraska and Iowa.
- 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: Panhandle Bridge at Pittsburgh Triple: [Pittsburgh, Cincinnati, Chicago and St. Louis Railroad, notableRouteFeature, Panhandle Bridge at Pittsburgh]
Generated description
The Panhandle Bridge at Pittsburgh is a historic railroad bridge over the Monongahela River that once carried major Pennsylvania Railroad and successor passenger trains into downtown Pittsburgh.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Panhandle Bridge at Pittsburgh Target entity description: The Panhandle Bridge at Pittsburgh is a historic railroad bridge over the Monongahela River that once carried major Pennsylvania Railroad and successor passenger trains into downtown Pittsburgh.
-
A.
Cincinnati–Covington Bridge
The Cincinnati–Covington Bridge is a historic 19th-century suspension bridge over the Ohio River, renowned as a pioneering precursor to the Brooklyn Bridge and a major engineering achievement of its era.
-
B.
Sagamore Bridge
Sagamore Bridge is a major highway bridge in Massachusetts that carries traffic over the Cape Cod Canal, serving as one of the primary gateways to Cape Cod.
-
C.
Mark Twain Memorial Bridge
The Mark Twain Memorial Bridge is a highway bridge over the Mississippi River near Hannibal, Missouri, named in honor of the famed American author Mark Twain.
-
D.
Willis Avenue Bridge
The Willis Avenue Bridge is a swing bridge in New York City that carries traffic between Manhattan and the Bronx.
-
E.
Grenville Dodge Memorial Bridge
The Grenville Dodge Memorial Bridge is a major highway bridge in the Omaha–Council Bluffs area that carries Interstate 480 across the Missouri River between Nebraska and Iowa.
- 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_69a2e8004cb88190b92ed1add6abf41a |
completed | Feb. 28, 2026, 1:05 p.m. |
| NER | Named-entity recognition | batch_69a2ee2c2d1881909aa1ccfaa4172b38 |
completed | Feb. 28, 2026, 1:31 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a5216a74088190bf8d363d32952c28 |
completed | March 2, 2026, 5:34 a.m. |
| NEDg | Description generation | batch_69a521ce19e08190aadeb913977c2d2e |
completed | March 2, 2026, 5:36 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a5226144f881908e0d1add6be6e156 |
completed | March 2, 2026, 5:38 a.m. |
Created at: Feb. 28, 2026, 1:08 p.m.