Triple

T6873179
Position Surface form Disambiguated ID Type / Status
Subject Llantwit Major E158601 entity
Predicate hasRailwayStation P918 FINISHED
Object Llantwit Major railway station
Llantwit Major railway station is a local rail stop in the town of Llantwit Major in the Vale of Glamorgan, Wales, providing passenger services on the Vale of Glamorgan Line.
 E626310 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: Llantwit Major railway station | Statement: [Llantwit Major, hasRailwayStation, Llantwit Major railway station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Llantwit Major railway station
Context triple: [Llantwit Major, hasRailwayStation, Llantwit Major railway station]
  • A. Ystrad Mynach railway station
    Ystrad Mynach railway station is a commuter rail stop in Caerphilly County Borough, Wales, providing local and regional services on the Valley Lines network.
  • B. Llanbedr railway station
    Llanbedr railway station is a small rural stop on the Cambrian Coast Line in Gwynedd, Wales, serving the village of Llanbedr and nearby coastal areas.
  • C. Machynlleth railway station
    Machynlleth railway station is a rural rail stop in Powys, Wales, serving the town of Machynlleth on the Cambrian Line and acting as an important local transport hub.
  • D. Nant Gwernol railway station
    Nant Gwernol railway station is the upper mountain terminus of the historic narrow-gauge Talyllyn Railway in Mid Wales, serving as a scenic endpoint for heritage steam train services.
  • E. Pencoed railway station
    Pencoed railway station is a local rail stop in Pencoed, Wales, providing passenger services on the South Wales Main Line.
  • 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: Llantwit Major railway station
Triple: [Llantwit Major, hasRailwayStation, Llantwit Major railway station]
Generated description
Llantwit Major railway station is a local rail stop in the town of Llantwit Major in the Vale of Glamorgan, Wales, providing passenger services on the Vale of Glamorgan Line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Llantwit Major railway station
Target entity description: Llantwit Major railway station is a local rail stop in the town of Llantwit Major in the Vale of Glamorgan, Wales, providing passenger services on the Vale of Glamorgan Line.
  • A. Ystrad Mynach railway station
    Ystrad Mynach railway station is a commuter rail stop in Caerphilly County Borough, Wales, providing local and regional services on the Valley Lines network.
  • B. Llanbedr railway station
    Llanbedr railway station is a small rural stop on the Cambrian Coast Line in Gwynedd, Wales, serving the village of Llanbedr and nearby coastal areas.
  • C. Machynlleth railway station
    Machynlleth railway station is a rural rail stop in Powys, Wales, serving the town of Machynlleth on the Cambrian Line and acting as an important local transport hub.
  • D. Nant Gwernol railway station
    Nant Gwernol railway station is the upper mountain terminus of the historic narrow-gauge Talyllyn Railway in Mid Wales, serving as a scenic endpoint for heritage steam train services.
  • E. Pencoed railway station
    Pencoed railway station is a local rail stop in Pencoed, Wales, providing passenger services on the South Wales Main Line.
  • 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_69c68832af1481908ce356e133ebaebe completed March 27, 2026, 1:37 p.m.
NER Named-entity recognition batch_69c6d8c73ea08190b6bb1463e7ead47b completed March 27, 2026, 7:21 p.m.
NED1 Entity disambiguation (via context triple) batch_69c742af0df88190bb23b7495c279e08 completed March 28, 2026, 2:53 a.m.
NEDg Description generation batch_69c74340b8d08190a9875f9ba8cc9394 completed March 28, 2026, 2:56 a.m.
NED2 Entity disambiguation (via description) batch_69c7441d394081909545893c3e5db227 completed March 28, 2026, 2:59 a.m.
Created at: March 27, 2026, 2:22 p.m.