Triple
T4130131
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Pittsburgh History and Landmarks Foundation Historic Landmark |
E85019
|
entity |
| Predicate | hasInstance |
P28232
|
FINISHED |
| Object |
Smithfield Street Bridge (PHLF Historic Landmark)
Smithfield Street Bridge is a historic lenticular truss bridge in downtown Pittsburgh, Pennsylvania, renowned as one of the oldest steel bridges in the United States and a key river crossing over the Monongahela River.
|
E416235
|
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: Smithfield Street Bridge (PHLF Historic Landmark) | Statement: [Pittsburgh History and Landmarks Foundation Historic Landmark, hasInstance, Smithfield Street Bridge (PHLF Historic Landmark)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Smithfield Street Bridge (PHLF Historic Landmark) Context triple: [Pittsburgh History and Landmarks Foundation Historic Landmark, hasInstance, Smithfield Street Bridge (PHLF Historic Landmark)]
-
A.
Church Street Bridge
Church Street Bridge is a historic road bridge in Melbourne, Australia, known for carrying Church Street over the Yarra River and serving as a key local traffic link.
-
B.
Spring Garden Street Bridge
Spring Garden Street Bridge is a historic roadway bridge in Philadelphia that carries Spring Garden Street over the Schuylkill River, connecting the city’s Center City area with West Philadelphia.
-
C.
Wells Street Bridge
Wells Street Bridge is a historic double-deck, double-leaf bascule bridge in downtown Chicago that carries both road traffic and elevated trains across the Chicago River.
-
D.
Harrison Street bridge
Harrison Street bridge is a roadway bridge spanning Lake Carnegie in Princeton, New Jersey, carrying Harrison Street across the lake and connecting the surrounding communities.
-
E.
Stanton Street Bridge
The Stanton Street Bridge is an international bridge that carries vehicular and pedestrian traffic across the U.S.–Mexico border between El Paso, Texas, and Ciudad Juárez, Chihuahua.
- 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: Smithfield Street Bridge (PHLF Historic Landmark) Triple: [Pittsburgh History and Landmarks Foundation Historic Landmark, hasInstance, Smithfield Street Bridge (PHLF Historic Landmark)]
Generated description
Smithfield Street Bridge is a historic lenticular truss bridge in downtown Pittsburgh, Pennsylvania, renowned as one of the oldest steel bridges in the United States and a key river crossing over the Monongahela River.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Smithfield Street Bridge (PHLF Historic Landmark) Target entity description: Smithfield Street Bridge is a historic lenticular truss bridge in downtown Pittsburgh, Pennsylvania, renowned as one of the oldest steel bridges in the United States and a key river crossing over the Monongahela River.
-
A.
Church Street Bridge
Church Street Bridge is a historic road bridge in Melbourne, Australia, known for carrying Church Street over the Yarra River and serving as a key local traffic link.
-
B.
Spring Garden Street Bridge
Spring Garden Street Bridge is a historic roadway bridge in Philadelphia that carries Spring Garden Street over the Schuylkill River, connecting the city’s Center City area with West Philadelphia.
-
C.
Wells Street Bridge
Wells Street Bridge is a historic double-deck, double-leaf bascule bridge in downtown Chicago that carries both road traffic and elevated trains across the Chicago River.
-
D.
Harrison Street bridge
Harrison Street bridge is a roadway bridge spanning Lake Carnegie in Princeton, New Jersey, carrying Harrison Street across the lake and connecting the surrounding communities.
-
E.
Stanton Street Bridge
The Stanton Street Bridge is an international bridge that carries vehicular and pedestrian traffic across the U.S.–Mexico border between El Paso, Texas, and Ciudad Juárez, Chihuahua.
- 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_69aed935ccd881909dc61f81bcdb7a78 |
completed | March 9, 2026, 2:29 p.m. |
| NER | Named-entity recognition | batch_69af0b2c76fc8190b3cd9facfcd6e427 |
completed | March 9, 2026, 6:02 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b576bf503c8190be44139a908ee42d |
completed | March 14, 2026, 2:54 p.m. |
| NEDg | Description generation | batch_69b577ac31888190b6182b00bd5c709f |
completed | March 14, 2026, 2:58 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69b57839ee548190804ef306fc9b3a6e |
completed | March 14, 2026, 3:01 p.m. |
Created at: March 9, 2026, 3:42 p.m.