Triple
T4164182
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Pontypool |
E84401
|
entity |
| Predicate | hasFeature |
P182
|
FINISHED |
| Object |
Pontypool and Blaenavon Railway
Pontypool and Blaenavon Railway is a preserved heritage railway in South Wales that operates historic trains along a former industrial line serving the Blaenavon World Heritage landscape.
|
E418162
|
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: Pontypool and Blaenavon Railway | Statement: [Pontypool, hasFeature, Pontypool and Blaenavon Railway]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Pontypool and Blaenavon Railway Context triple: [Pontypool, hasFeature, Pontypool and Blaenavon Railway]
-
A.
Rhymney Line
The Rhymney Line is a suburban railway route in South Wales that connects Cardiff with the town of Rhymney, forming part of the Valley Lines network.
-
B.
Talyllyn Railway
Talyllyn Railway is a historic narrow-gauge heritage railway in Wales, renowned as the world’s first preserved railway to be operated primarily by volunteers.
-
C.
Pelion Railway
Pelion Railway is a historic narrow-gauge mountain railway in Greece, renowned for its scenic route through the Pelion peninsula and its traditional steam trains.
-
D.
Llangollen Railway
Llangollen Railway is a preserved heritage railway in Denbighshire, Wales, known for operating steam and heritage diesel services through the scenic Dee Valley.
-
E.
Maesteg Line
The Maesteg Line is a commuter rail route in South Wales connecting Maesteg with larger hubs such as Cardiff via Bridgend.
- 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: Pontypool and Blaenavon Railway Triple: [Pontypool, hasFeature, Pontypool and Blaenavon Railway]
Generated description
Pontypool and Blaenavon Railway is a preserved heritage railway in South Wales that operates historic trains along a former industrial line serving the Blaenavon World Heritage landscape.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Pontypool and Blaenavon Railway Target entity description: Pontypool and Blaenavon Railway is a preserved heritage railway in South Wales that operates historic trains along a former industrial line serving the Blaenavon World Heritage landscape.
-
A.
Rhymney Line
The Rhymney Line is a suburban railway route in South Wales that connects Cardiff with the town of Rhymney, forming part of the Valley Lines network.
-
B.
Talyllyn Railway
Talyllyn Railway is a historic narrow-gauge heritage railway in Wales, renowned as the world’s first preserved railway to be operated primarily by volunteers.
-
C.
Pelion Railway
Pelion Railway is a historic narrow-gauge mountain railway in Greece, renowned for its scenic route through the Pelion peninsula and its traditional steam trains.
-
D.
Llangollen Railway
Llangollen Railway is a preserved heritage railway in Denbighshire, Wales, known for operating steam and heritage diesel services through the scenic Dee Valley.
-
E.
Maesteg Line
The Maesteg Line is a commuter rail route in South Wales connecting Maesteg with larger hubs such as Cardiff via Bridgend.
- 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_69aed932cab48190b80ffe35f7029ae1 |
completed | March 9, 2026, 2:29 p.m. |
| NER | Named-entity recognition | batch_69af02a9bf348190b99cecd19fe65779 |
completed | March 9, 2026, 5:26 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b57f478c948190a997e006015e588d |
completed | March 14, 2026, 3:31 p.m. |
| NEDg | Description generation | batch_69b57fcd3d60819086ab5ad7b69242a2 |
completed | March 14, 2026, 3:33 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69b5803ec2088190ac9d4b3d34278e17 |
completed | March 14, 2026, 3:35 p.m. |
Created at: March 9, 2026, 3:44 p.m.