Triple

T17607570
Position Surface form Disambiguated ID Type / Status
Subject London Paddington–Swansea route E428873 entity
Predicate nonElectrifiedSection P21804 FINISHED
Object Cardiff Central–Swansea
Cardiff Central–Swansea is a key western segment of the South Wales Main Line, linking the Welsh capital with the city of Swansea along the country’s south coast.
 E1277503 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: Cardiff Central–Swansea | Statement: [London Paddington–Swansea route, nonElectrifiedSection, Cardiff Central–Swansea]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Cardiff Central–Swansea
Context triple: [London Paddington–Swansea route, nonElectrifiedSection, Cardiff Central–Swansea]
  • A. Cardiff Central
    Cardiff Central is the main railway station in Cardiff, Wales, serving as a major transport hub for regional and long-distance rail services across the UK.
  • B. South Wales derby
    The South Wales derby is a fiercely contested football rivalry between Welsh clubs Swansea City and Cardiff City, known for its intense atmosphere and deep regional significance.
  • C. Cardiff County
    Cardiff County is a principal area and the capital city county of Wales, encompassing the city of Cardiff and its surrounding communities.
  • D. Neath Port Talbot
    Neath Port Talbot is a county borough in south Wales known for its industrial heritage, coastal landscapes, and the town of Neath.
  • E. Cardiff Taff Vale
    Cardiff Taff Vale was the original name of a railway station in Cardiff that later became known as Cardiff Queen Street railway station.
  • 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: Cardiff Central–Swansea
Triple: [London Paddington–Swansea route, nonElectrifiedSection, Cardiff Central–Swansea]
Generated description
Cardiff Central–Swansea is a key western segment of the South Wales Main Line, linking the Welsh capital with the city of Swansea along the country’s south coast.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Cardiff Central–Swansea
Target entity description: Cardiff Central–Swansea is a key western segment of the South Wales Main Line, linking the Welsh capital with the city of Swansea along the country’s south coast.
  • A. Cardiff Central
    Cardiff Central is the main railway station in Cardiff, Wales, serving as a major transport hub for regional and long-distance rail services across the UK.
  • B. South Wales derby
    The South Wales derby is a fiercely contested football rivalry between Welsh clubs Swansea City and Cardiff City, known for its intense atmosphere and deep regional significance.
  • C. Cardiff County
    Cardiff County is a principal area and the capital city county of Wales, encompassing the city of Cardiff and its surrounding communities.
  • D. Neath Port Talbot
    Neath Port Talbot is a county borough in south Wales known for its industrial heritage, coastal landscapes, and the town of Neath.
  • E. Cardiff Taff Vale
    Cardiff Taff Vale was the original name of a railway station in Cardiff that later became known as Cardiff Queen Street railway station.
  • 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_69d889e1c6148190ba76241e74688f8b completed April 10, 2026, 5:25 a.m.
NER Named-entity recognition batch_69e46c4ccef08190aeaa88670364bd74 completed April 19, 2026, 5:46 a.m.
NED1 Entity disambiguation (via context triple) batch_6a01e821dcd8819081ded43278f37fb2 completed May 11, 2026, 2:30 p.m.
NEDg Description generation batch_6a01ee1a291c81909fa432ccc787028f completed May 11, 2026, 2:56 p.m.
NED2 Entity disambiguation (via description) batch_6a01eec7e00c81908d88be9f88e924c8 completed May 11, 2026, 2:59 p.m.
Created at: April 10, 2026, 5:51 a.m.