Triple

T10706958
Position Surface form Disambiguated ID Type / Status
Subject Digswell Viaduct E252432 entity
Predicate alsoKnownAs P39 FINISHED
Object Welwyn Viaduct
Welwyn Viaduct is a prominent 19th-century railway viaduct in Hertfordshire, England, known for its multiple brick arches carrying the East Coast Main Line across the River Mimram valley.
 E944005 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: Welwyn Viaduct | Statement: [Digswell Viaduct, alsoKnownAs, Welwyn Viaduct]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Welwyn Viaduct
Context triple: [Digswell Viaduct, alsoKnownAs, Welwyn Viaduct]
  • A. Milton Regis Viaduct
    Milton Regis Viaduct is a railway viaduct in Sittingbourne, Kent, that carries the heritage Sittingbourne & Kemsley Light Railway across the Milton Regis area.
  • B. Medway Viaducts
    Medway Viaducts are a set of major bridges in Kent, England, carrying road and high-speed rail traffic across the River Medway as part of key national transport routes.
  • C. Cummersdale Viaduct
    Cummersdale Viaduct is a railway bridge in Cumbria, England, carrying the Cumbrian Coast Line across the River Caldew near Carlisle.
  • D. Tinsley Viaduct
    Tinsley Viaduct is a two-tier steel box-girder road bridge near Sheffield, England, notable for carrying the M1 motorway and local traffic across the Don Valley and adjacent waterways.
  • E. Esher Bridge
    Esher Bridge is a historic road bridge in Esher, Surrey, carrying traffic over the River Mole.
  • 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: Welwyn Viaduct
Triple: [Digswell Viaduct, alsoKnownAs, Welwyn Viaduct]
Generated description
Welwyn Viaduct is a prominent 19th-century railway viaduct in Hertfordshire, England, known for its multiple brick arches carrying the East Coast Main Line across the River Mimram valley.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Welwyn Viaduct
Target entity description: Welwyn Viaduct is a prominent 19th-century railway viaduct in Hertfordshire, England, known for its multiple brick arches carrying the East Coast Main Line across the River Mimram valley.
  • A. Milton Regis Viaduct
    Milton Regis Viaduct is a railway viaduct in Sittingbourne, Kent, that carries the heritage Sittingbourne & Kemsley Light Railway across the Milton Regis area.
  • B. Medway Viaducts
    Medway Viaducts are a set of major bridges in Kent, England, carrying road and high-speed rail traffic across the River Medway as part of key national transport routes.
  • C. Cummersdale Viaduct
    Cummersdale Viaduct is a railway bridge in Cumbria, England, carrying the Cumbrian Coast Line across the River Caldew near Carlisle.
  • D. Tinsley Viaduct
    Tinsley Viaduct is a two-tier steel box-girder road bridge near Sheffield, England, notable for carrying the M1 motorway and local traffic across the Don Valley and adjacent waterways.
  • E. Esher Bridge
    Esher Bridge is a historic road bridge in Esher, Surrey, carrying traffic over the River Mole.
  • 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_69d6aa5cbabc8190973e683950d89faf completed April 8, 2026, 7:19 p.m.
NER Named-entity recognition batch_69d6fddfbed48190810bb3faee473fde completed April 9, 2026, 1:16 a.m.
NED1 Entity disambiguation (via context triple) batch_69f018324bf88190bcd2bf168b1065d3 completed April 28, 2026, 2:15 a.m.
NEDg Description generation batch_69f01d7ab930819095eaae226ab55b80 completed April 28, 2026, 2:37 a.m.
NED2 Entity disambiguation (via description) batch_69f043ddbfe481908e0c439dbd3e944f completed April 28, 2026, 5:21 a.m.
Created at: April 8, 2026, 9:12 p.m.