Triple

T4678830
Position Surface form Disambiguated ID Type / Status
Subject Machynlleth E103746 entity
Predicate transport P230 FINISHED
Object 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.
 E462054 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: Machynlleth railway station | Statement: [Machynlleth, transport, Machynlleth railway station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Machynlleth railway station
Context triple: [Machynlleth, transport, Machynlleth railway station]
  • A. Carmarthen railway station
    Carmarthen railway station is a key rail hub in west Wales serving the town of Carmarthen with regional and intercity connections.
  • B. 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.
  • C. Merthyr Tydfil railway station
    Merthyr Tydfil railway station is the main train station serving the town of Merthyr Tydfil in Wales, providing regional rail connections to surrounding areas.
  • D. 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.
  • 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: Machynlleth railway station
Triple: [Machynlleth, transport, Machynlleth railway station]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Machynlleth railway station
Target entity description: 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.
  • A. Carmarthen railway station
    Carmarthen railway station is a key rail hub in west Wales serving the town of Carmarthen with regional and intercity connections.
  • B. 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.
  • C. Merthyr Tydfil railway station
    Merthyr Tydfil railway station is the main train station serving the town of Merthyr Tydfil in Wales, providing regional rail connections to surrounding areas.
  • D. 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.
  • 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_69bd43dda32c8190938b37744ca270fc completed March 20, 2026, 12:55 p.m.
NER Named-entity recognition batch_69bd636acffc819094e03c5bb53203d8 completed March 20, 2026, 3:10 p.m.
NED1 Entity disambiguation (via context triple) batch_69be03a497ac8190bd278a4bd531aa45 completed March 21, 2026, 2:34 a.m.
NEDg Description generation batch_69be050e0f488190804c512e7cc17c56 completed March 21, 2026, 2:40 a.m.
NED2 Entity disambiguation (via description) batch_69be05a6bed081909c8d8830fb103610 completed March 21, 2026, 2:42 a.m.
Created at: March 20, 2026, 1:16 p.m.