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.