Triple

T4183848
Position Surface form Disambiguated ID Type / Status
Subject Pencoed E88262 entity
Predicate hasRailwayStation P918 FINISHED
Object Pencoed railway station
Pencoed railway station is a local rail stop in Pencoed, Wales, providing passenger services on the South Wales Main Line.
 E418817 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: Pencoed railway station | Statement: [Pencoed, hasRailwayStation, Pencoed railway station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Pencoed railway station
Context triple: [Pencoed, hasRailwayStation, Pencoed railway station]
  • A. 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.
  • B. Cefn-y-Bedd railway station
    Cefn-y-Bedd railway station is a small rural stop in Wrexham County Borough, Wales, serving the village of Cefn-y-Bedd with local passenger services.
  • C. Carmarthen railway station
    Carmarthen railway station is a key rail hub in west Wales serving the town of Carmarthen with regional and intercity connections.
  • D. Trawsfynydd railway station
    Trawsfynydd railway station is a disused former railway station in Gwynedd, Wales, that once served the village of Trawsfynydd and its surrounding rural area.
  • E. Tywyn railway station
    Tywyn railway station is a small coastal railway stop in Gwynedd, Wales, serving the town of Tywyn on the Cambrian 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: Pencoed railway station
Triple: [Pencoed, hasRailwayStation, Pencoed railway station]
Generated description
Pencoed railway station is a local rail stop in Pencoed, Wales, providing passenger services on the South Wales Main Line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Pencoed railway station
Target entity description: Pencoed railway station is a local rail stop in Pencoed, Wales, providing passenger services on the South Wales Main Line.
  • A. 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.
  • B. Cefn-y-Bedd railway station
    Cefn-y-Bedd railway station is a small rural stop in Wrexham County Borough, Wales, serving the village of Cefn-y-Bedd with local passenger services.
  • C. Carmarthen railway station
    Carmarthen railway station is a key rail hub in west Wales serving the town of Carmarthen with regional and intercity connections.
  • D. Trawsfynydd railway station
    Trawsfynydd railway station is a disused former railway station in Gwynedd, Wales, that once served the village of Trawsfynydd and its surrounding rural area.
  • E. Tywyn railway station
    Tywyn railway station is a small coastal railway stop in Gwynedd, Wales, serving the town of Tywyn on the Cambrian 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_69aed9477e8c81908bcb862d2db55b1d completed March 9, 2026, 2:29 p.m.
NER Named-entity recognition batch_69af0307a0b481909c7287402a8c78c4 completed March 9, 2026, 5:27 p.m.
NED1 Entity disambiguation (via context triple) batch_69b589fe4b508190a1c5a1d426245ede completed March 14, 2026, 4:17 p.m.
NEDg Description generation batch_69b58a64e67081909d9c03c8f92b4f7e completed March 14, 2026, 4:18 p.m.
NED2 Entity disambiguation (via description) batch_69b58aeb4f848190aa8d8511c3b63eaa completed March 14, 2026, 4:20 p.m.
Created at: March 9, 2026, 3:45 p.m.