Triple
T21567063
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | South Wales Coal Measures |
E532187
|
entity |
| Predicate | underlies |
P4501
|
FINISHED |
| Object | Pennant Sandstone Formation |
—
|
NE NERFINISHED |
How this triple was built (3 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: Pennant Sandstone Formation | Statement: [South Wales Coal Measures, underlies, Pennant Sandstone Formation]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Pennant Sandstone Formation Context triple: [South Wales Coal Measures, underlies, Pennant Sandstone Formation]
-
A.
St Bees Sandstone Formation
The St Bees Sandstone Formation is a Triassic-age sedimentary rock unit in northwest England, notable for its red sandstones that form part of an important regional aquifer and record arid continental environments.
-
B.
Wenlock Limestone Formation
The Wenlock Limestone Formation is a Silurian-age marine sedimentary rock unit in the Welsh Borderlands of England, renowned for its rich fossil content and prominent exposure at Wenlock Edge.
-
C.
Minchinbury Sandstone
Minchinbury Sandstone is a geological rock unit within the Sydney Basin of New South Wales, Australia, known for its fine- to medium-grained sedimentary sandstone deposits.
-
D.
Sidmouth Mudstone Formation
The Sidmouth Mudstone Formation is a geological rock unit within the Triassic Mercia Mudstone Group of Britain, characterized mainly by red mudstones and associated evaporite deposits.
-
E.
Torridonian Sandstone
Torridonian Sandstone is a Precambrian sedimentary rock formation in northwest Scotland, notable for its great age and well-preserved terrestrial depositional features.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Pennant Sandstone Formation Target entity description: The Pennant Sandstone Formation is a thick, hard sandstone unit in the South Wales Coalfield, historically important as a building and paving stone and as a marker of late Carboniferous geological strata in the region.
-
A.
St Bees Sandstone Formation
The St Bees Sandstone Formation is a Triassic-age sedimentary rock unit in northwest England, notable for its red sandstones that form part of an important regional aquifer and record arid continental environments.
-
B.
Wenlock Limestone Formation
The Wenlock Limestone Formation is a Silurian-age marine sedimentary rock unit in the Welsh Borderlands of England, renowned for its rich fossil content and prominent exposure at Wenlock Edge.
-
C.
Minchinbury Sandstone
Minchinbury Sandstone is a geological rock unit within the Sydney Basin of New South Wales, Australia, known for its fine- to medium-grained sedimentary sandstone deposits.
-
D.
Sidmouth Mudstone Formation
The Sidmouth Mudstone Formation is a geological rock unit within the Triassic Mercia Mudstone Group of Britain, characterized mainly by red mudstones and associated evaporite deposits.
-
E.
Torridonian Sandstone
Torridonian Sandstone is a Precambrian sedimentary rock formation in northwest Scotland, notable for its great age and well-preserved terrestrial depositional features.
- F. None of above. chosen
Provenance (2 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_69e0c460db088190828c64206a450273 |
completed | April 16, 2026, 11:13 a.m. |
| NER | Named-entity recognition | batch_69eee9c9f264819085b4807923860793 |
completed | April 27, 2026, 4:44 a.m. |
Created at: April 16, 2026, 6:30 p.m.