Triple
T10313839
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Porthmadog Harbour Station |
E241963
|
entity |
| Predicate | terminusOf |
P3375
|
FINISHED |
| Object | Ffestiniog Railway |
E47909
|
NE FINISHED |
How this triple was built (2 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: Ffestiniog Railway | Statement: [Porthmadog Harbour Station, terminusOf, Ffestiniog Railway]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Ffestiniog Railway Context triple: [Porthmadog Harbour Station, terminusOf, Ffestiniog Railway]
-
A.
Ffestiniog Railway
chosen
Ffestiniog Railway is a historic narrow-gauge heritage railway in North Wales, renowned as one of the oldest independent railway companies in the world and a popular tourist attraction through the Snowdonia landscape.
-
B.
Snowdon Mountain Railway
Snowdon Mountain Railway is a historic narrow-gauge rack and pinion railway in Wales that carries passengers from Llanberis to near the summit of Mount Snowdon.
-
C.
Barry Railway
Barry Railway was a historic Welsh railway company that played a key role in transporting coal and goods to and from Barry Docks.
-
D.
Vale of Rheidol Railway
The Vale of Rheidol Railway is a historic narrow-gauge steam railway in Ceredigion, Wales, running through the scenic Rheidol Valley between Aberystwyth and Devil's Bridge.
-
E.
Llanberis Lake Railway
The Llanberis Lake Railway is a narrow-gauge heritage railway in Snowdonia, Wales, offering scenic rides along the shores of Llyn Padarn with views of the surrounding mountains.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69d381ac38808190a8ca7457c85b625b |
completed | April 6, 2026, 9:49 a.m. |
| NER | Named-entity recognition | batch_69d4d35a292c8190bc8c467e522bba92 |
completed | April 7, 2026, 9:50 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d89f45e8c0819091f9397619354882 |
completed | April 10, 2026, 6:57 a.m. |
Created at: April 6, 2026, 11:48 a.m.