Triple
T4742824
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Pontypridd railway station |
E105286
|
entity |
| Predicate | railwayLine |
P848
|
FINISHED |
| Object | Merthyr Line |
E160327
|
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: Merthyr Line | Statement: [Pontypridd railway station, railwayLine, Merthyr Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Merthyr Line Context triple: [Pontypridd railway station, railwayLine, Merthyr Line]
-
A.
Merthyr Line
chosen
The Merthyr Line is a commuter rail route in South Wales that connects Cardiff with Merthyr Tydfil and surrounding Valleys communities.
-
B.
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.
-
C.
Maesteg Line
The Maesteg Line is a commuter rail route in South Wales connecting Maesteg with larger hubs such as Cardiff via Bridgend.
-
D.
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.
-
E.
South Wales Railway
The South Wales Railway was a 19th-century railway company that built and operated the main line linking Gloucester and later London with key industrial and port cities across South Wales.
- 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_69bd43ef87a48190a5bc3600711aa032 |
completed | March 20, 2026, 12:56 p.m. |
| NER | Named-entity recognition | batch_69bd64a85e9c81908e9c7bbbb998953e |
completed | March 20, 2026, 3:15 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69be5c8e7c74819080b7a5d3995954dd |
completed | March 21, 2026, 8:53 a.m. |
Created at: March 20, 2026, 1:19 p.m.