Triple
T2156903
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Ffestiniog Railway |
E47909
|
entity |
| Predicate | startingPoint |
P389
|
FINISHED |
| Object |
Porthmadog Harbour Station
Porthmadog Harbour Station is a historic narrow-gauge railway terminus in Porthmadog, Wales, serving as a key hub for heritage steam services on the Ffestiniog Railway.
|
E241963
|
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: Porthmadog Harbour Station | Statement: [Ffestiniog Railway, startingPoint, Porthmadog Harbour Station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Porthmadog Harbour Station Context triple: [Ffestiniog Railway, startingPoint, Porthmadog Harbour Station]
-
A.
Fishguard Harbour railway station
Fishguard Harbour railway station is a coastal rail terminus in Pembrokeshire, Wales, serving as a key link between train services and ferry connections to Ireland.
-
B.
Harlech railway station
Harlech railway station is a small coastal stop on the Cambrian Coast Line in Gwynedd, Wales, serving the town of Harlech and its nearby historic castle.
-
C.
Aberystwyth railway station
Aberystwyth railway station is the main terminus railway station serving the coastal town of Aberystwyth in Ceredigion, Wales, and a key hub on the Cambrian Line.
-
D.
Porthmadog
Porthmadog is a coastal town in Gwynedd, Wales, known as a gateway to Snowdonia and for its historic harbour and heritage railways.
-
E.
Mostyn Port
Mostyn Port is a commercial seaport in North Wales that serves as a key operations and maintenance base for offshore wind farms in the Irish Sea.
- 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: Porthmadog Harbour Station Triple: [Ffestiniog Railway, startingPoint, Porthmadog Harbour Station]
Generated description
Porthmadog Harbour Station is a historic narrow-gauge railway terminus in Porthmadog, Wales, serving as a key hub for heritage steam services on the Ffestiniog Railway.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Porthmadog Harbour Station Target entity description: Porthmadog Harbour Station is a historic narrow-gauge railway terminus in Porthmadog, Wales, serving as a key hub for heritage steam services on the Ffestiniog Railway.
-
A.
Fishguard Harbour railway station
Fishguard Harbour railway station is a coastal rail terminus in Pembrokeshire, Wales, serving as a key link between train services and ferry connections to Ireland.
-
B.
Harlech railway station
Harlech railway station is a small coastal stop on the Cambrian Coast Line in Gwynedd, Wales, serving the town of Harlech and its nearby historic castle.
-
C.
Aberystwyth railway station
Aberystwyth railway station is the main terminus railway station serving the coastal town of Aberystwyth in Ceredigion, Wales, and a key hub on the Cambrian Line.
-
D.
Porthmadog
Porthmadog is a coastal town in Gwynedd, Wales, known as a gateway to Snowdonia and for its historic harbour and heritage railways.
-
E.
Mostyn Port
Mostyn Port is a commercial seaport in North Wales that serves as a key operations and maintenance base for offshore wind farms in the Irish Sea.
- 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_69a88a1d1fd8819088b34990d69a712f |
completed | March 4, 2026, 7:38 p.m. |
| NER | Named-entity recognition | batch_69abbe67d6888190b8d3c07527c8f80e |
completed | March 7, 2026, 5:58 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ae5d962a2c8190be1e3ae48367abad |
completed | March 9, 2026, 5:41 a.m. |
| NEDg | Description generation | batch_69ae5e48eefc8190b459278860bb3217 |
completed | March 9, 2026, 5:44 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69ae5ec233788190a52dc1a135f7dfb9 |
completed | March 9, 2026, 5:46 a.m. |
Created at: March 4, 2026, 7:44 p.m.