Triple
T9262258
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Llangefni |
E222606
|
entity |
| Predicate | hasFormerRailwayLine |
P20480
|
FINISHED |
| Object |
Anglesey Central Railway
Anglesey Central Railway was a former railway line on the island of Anglesey in Wales that connected several inland towns and facilitated local transport and industry.
|
E788227
|
NE FINISHED |
How this triple was built (5 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: Anglesey Central Railway | Statement: [Llangefni, hasFormerRailwayLine, Anglesey Central Railway]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Anglesey Central Railway Context triple: [Llangefni, hasFormerRailwayLine, Anglesey Central Railway]
-
A.
Conwy Valley Line
The Conwy Valley Line is a scenic railway route in North Wales that runs through the Conwy Valley from the coast into the Snowdonia National Park.
-
B.
Maesteg Line
The Maesteg Line is a commuter rail route in South Wales connecting Maesteg with larger hubs such as Cardiff via Bridgend.
-
C.
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.
-
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.
Cynwyd Line
The Cynwyd Line is a short commuter rail service in the Philadelphia area operated by SEPTA, running between Center City and the Cynwyd neighborhood in Lower Merion Township.
- 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: Anglesey Central Railway Triple: [Llangefni, hasFormerRailwayLine, Anglesey Central Railway]
Generated description
Anglesey Central Railway was a former railway line on the island of Anglesey in Wales that connected several inland towns and facilitated local transport and industry.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Anglesey Central Railway Target entity description: Anglesey Central Railway was a former railway line on the island of Anglesey in Wales that connected several inland towns and facilitated local transport and industry.
-
A.
Conwy Valley Line
The Conwy Valley Line is a scenic railway route in North Wales that runs through the Conwy Valley from the coast into the Snowdonia National Park.
-
B.
Maesteg Line
The Maesteg Line is a commuter rail route in South Wales connecting Maesteg with larger hubs such as Cardiff via Bridgend.
-
C.
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.
-
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.
Cynwyd Line
The Cynwyd Line is a short commuter rail service in the Philadelphia area operated by SEPTA, running between Center City and the Cynwyd neighborhood in Lower Merion Township.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: hasFormerRailwayLine Context triple: [Llangefni, hasFormerRailwayLine, Anglesey Central Railway]
-
A.
formerRailwayLine
chosen
Indicates that a railway line previously existed in the past but is no longer in operation or has been decommissioned.
-
B.
followsFormerRailroad
Indicates that something is aligned with or traces the route of a former railroad line.
-
C.
railroadLinePredecessor
Indicates that one railroad line is the direct predecessor or earlier version in the historical or organizational sequence of another railroad line.
-
D.
hasRailroadHistoryWith
Indicates a historical relationship or connection between entities involving railroads, such as shared development, operation, or significant events in railway history.
-
E.
formerRailUse
Indicates that an entity previously served a particular railway-related function or purpose, but no longer does so.
- F. None of above.
Provenance (6 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_69ca841f2e808190a64f4c31903a1332 |
completed | March 30, 2026, 2:09 p.m. |
| NER | Named-entity recognition | batch_69cd07189bc48190987315bd5d3ce4f1 |
completed | April 1, 2026, 11:52 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d09c0526c48190aae93a70cfe5562c |
completed | April 4, 2026, 5:05 a.m. |
| NEDg | Description generation | batch_69d09d6cc45c8190b6cb44212ccfcbc8 |
completed | April 4, 2026, 5:11 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69d09e2069048190ac22b738fa324771 |
completed | April 4, 2026, 5:14 a.m. |
| PD | Predicate disambiguation | batch_69cc7a537bbc8190baee71f556e52a7b |
completed | April 1, 2026, 1:52 a.m. |
Created at: March 30, 2026, 7:32 p.m.