Triple

T2102679
Position Surface form Disambiguated ID Type / Status
Subject Cambrian Line E37124 entity
Predicate hasStructure P35 FINISHED
Object Barmouth Bridge
Barmouth Bridge is a historic wooden viaduct carrying the railway across the Mawddach Estuary near Barmouth in Gwynedd, Wales.
 E273159 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: Barmouth Bridge | Statement: [Cambrian Line, hasStructure, Barmouth Bridge]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Barmouth Bridge
Context triple: [Cambrian Line, hasStructure, Barmouth Bridge]
  • A. Briton Ferry Bridge
    Briton Ferry Bridge is a historic road bridge in South Wales that spans the River Neath, linking the town of Briton Ferry with Neath and the wider Neath Port Talbot area.
  • B. Chepstow Bridge
    Chepstow Bridge is a historic cast-iron road bridge spanning the River Wye between Chepstow in Wales and Gloucestershire in England.
  • C. Severn Bridge
    Severn Bridge is a major suspension bridge in the United Kingdom that spans the River Severn and connects England with South Wales.
  • D. Ha'penny Bridge
    Ha'penny Bridge is a historic cast-iron pedestrian bridge over the River Liffey and one of Dublin’s most iconic symbols.
  • E. Ethelfleda Bridge
    Ethelfleda Bridge is a historic railway bridge in Runcorn, England, carrying trains across the River Mersey and the Manchester Ship Canal.
  • 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: Barmouth Bridge
Triple: [Cambrian Line, hasStructure, Barmouth Bridge]
Generated description
Barmouth Bridge is a historic wooden viaduct carrying the railway across the Mawddach Estuary near Barmouth in Gwynedd, Wales.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Barmouth Bridge
Target entity description: Barmouth Bridge is a historic wooden viaduct carrying the railway across the Mawddach Estuary near Barmouth in Gwynedd, Wales.
  • A. Briton Ferry Bridge
    Briton Ferry Bridge is a historic road bridge in South Wales that spans the River Neath, linking the town of Briton Ferry with Neath and the wider Neath Port Talbot area.
  • B. Chepstow Bridge
    Chepstow Bridge is a historic cast-iron road bridge spanning the River Wye between Chepstow in Wales and Gloucestershire in England.
  • C. Severn Bridge
    Severn Bridge is a major suspension bridge in the United Kingdom that spans the River Severn and connects England with South Wales.
  • D. Ha'penny Bridge
    Ha'penny Bridge is a historic cast-iron pedestrian bridge over the River Liffey and one of Dublin’s most iconic symbols.
  • E. Ethelfleda Bridge
    Ethelfleda Bridge is a historic railway bridge in Runcorn, England, carrying trains across the River Mersey and the Manchester Ship Canal.
  • 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_69a8861828948190924aa30c08806b3a completed March 4, 2026, 7:20 p.m.
NER Named-entity recognition batch_69abbabe1e9081908ea66c5406e2f1d9 completed March 7, 2026, 5:42 a.m.
NED1 Entity disambiguation (via context triple) batch_69af1f72ad8c81909da734f6316f747f completed March 9, 2026, 7:28 p.m.
NEDg Description generation batch_69af21e9efd08190829bd7c4b1c50695 completed March 9, 2026, 7:39 p.m.
NED2 Entity disambiguation (via description) batch_69af22d6a7d4819093640b2797167c46 completed March 9, 2026, 7:43 p.m.
Created at: March 4, 2026, 7:43 p.m.