Triple

T3859249
Position Surface form Disambiguated ID Type / Status
Subject Tay Bridge disaster E90093 entity
Predicate engineerOfCollapsedBridge P52394 FINISHED
Object Thomas Bouch
Thomas Bouch was a 19th-century British railway engineer best known for designing the ill-fated first Tay Bridge, whose catastrophic collapse in 1879 ruined his reputation.
E392215 NE FINISHED

How this triple was built (5 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: Thomas Bouch | Statement: [Tay Bridge disaster, engineerOfCollapsedBridge, Thomas Bouch]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Thomas Bouch
Context triple: [Tay Bridge disaster, engineerOfCollapsedBridge, Thomas Bouch]
  • A. Thomas Telford
    Thomas Telford was a pioneering 18th–19th century Scottish civil engineer renowned for his innovative bridges, canals, and roads across Britain.
  • B. Robert Stephenson
    Robert Stephenson was a pioneering 19th-century English railway and civil engineer renowned for his work on early steam locomotives and major railway bridges.
  • C. Isambard Kingdom Brunel
    Isambard Kingdom Brunel was a pioneering 19th-century British engineer renowned for his groundbreaking work on railways, bridges, tunnels, and steamships that transformed industrial transportation.
  • D. John Rennie the Younger
    John Rennie the Younger was a 19th-century British civil engineer noted for completing major projects such as London Bridge and continuing the work of his father, John Rennie the Elder.
  • E. John Rennie the Elder
    John Rennie the Elder was a prominent Scottish civil engineer of the late 18th and early 19th centuries, renowned for his innovative work on canals, bridges, and docks across Britain.
  • 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: Thomas Bouch
Triple: [Tay Bridge disaster, engineerOfCollapsedBridge, Thomas Bouch]
Generated description
Thomas Bouch was a 19th-century British railway engineer best known for designing the ill-fated first Tay Bridge, whose catastrophic collapse in 1879 ruined his reputation.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Thomas Bouch
Target entity description: Thomas Bouch was a 19th-century British railway engineer best known for designing the ill-fated first Tay Bridge, whose catastrophic collapse in 1879 ruined his reputation.
  • A. Thomas Telford
    Thomas Telford was a pioneering 18th–19th century Scottish civil engineer renowned for his innovative bridges, canals, and roads across Britain.
  • B. Robert Stephenson
    Robert Stephenson was a pioneering 19th-century English railway and civil engineer renowned for his work on early steam locomotives and major railway bridges.
  • C. Isambard Kingdom Brunel
    Isambard Kingdom Brunel was a pioneering 19th-century British engineer renowned for his groundbreaking work on railways, bridges, tunnels, and steamships that transformed industrial transportation.
  • D. John Rennie the Younger
    John Rennie the Younger was a 19th-century British civil engineer noted for completing major projects such as London Bridge and continuing the work of his father, John Rennie the Elder.
  • E. John Rennie the Elder
    John Rennie the Elder was a prominent Scottish civil engineer of the late 18th and early 19th centuries, renowned for his innovative work on canals, bridges, and docks across Britain.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: engineerOfCollapsedBridge
Context triple: [Tay Bridge disaster, engineerOfCollapsedBridge, Thomas Bouch]
  • A. riverCrossingStructure
    Indicates a structure that allows passage across a river, such as by spanning or traversing it.
  • B. originalBridgeOpened
    Indicates that the first or initial version of a bridge was opened for use or put into operation.
  • C. bridgeType
    Indicates the specific kind or classification of a bridge associated with an entity.
  • D. isOldestSurvivingBridgeAcross
    Indicates that a bridge is the most ancient still-existing bridge that spans a specified waterway, road, or gap.
  • E. rebuiltAsLiftBridge
    Indicates that an existing structure was reconstructed or converted into a lift bridge.
  • F. None of above. chosen

Provenance (7 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_69aed95b3c088190a8f85d19e6070599 completed March 9, 2026, 2:29 p.m.
NER Named-entity recognition batch_69aeec1ff39c8190b83a88abd840a0e3 completed March 9, 2026, 3:49 p.m.
NED1 Entity disambiguation (via context triple) batch_69b50424b23c8190b888cfb79e26e758 completed March 14, 2026, 6:45 a.m.
NEDg Description generation batch_69b504ff7624819089f98794ec97ed8f completed March 14, 2026, 6:49 a.m.
NED2 Entity disambiguation (via description) batch_69b50594e4888190b2db45eee2a988a7 completed March 14, 2026, 6:52 a.m.
PD Predicate disambiguation batch_69aee752c8a48190a670f73ed0bf1e61 completed March 9, 2026, 3:29 p.m.
PDg Predicate description generation batch_69aeeb828fb08190901d51edbe8bd304 completed March 9, 2026, 3:47 p.m.
Created at: March 9, 2026, 3:19 p.m.