Triple
T5820246
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Ordnance Survey National Grid |
E129089
|
entity |
| Predicate | basedOnEllipsoid |
P60848
|
FINISHED |
| Object | Airy 1830 ellipsoid |
E486592
|
NE FINISHED |
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: Airy 1830 ellipsoid | Statement: [Ordnance Survey National Grid, basedOnEllipsoid, Airy 1830 ellipsoid]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Airy 1830 ellipsoid Context triple: [Ordnance Survey National Grid, basedOnEllipsoid, Airy 1830 ellipsoid]
-
A.
Airy 1830 ellipsoid
chosen
The Airy 1830 ellipsoid is a reference ellipsoid defined in the 19th century for geodetic calculations in Great Britain, forming the basis of traditional mapping systems such as the British National Grid.
-
B.
Airy Modified ellipsoid
The Airy Modified ellipsoid is a slightly adjusted version of the Airy ellipsoid used as the reference surface for mapping and geodetic calculations in systems such as the Irish grid reference system.
-
C.
Maclaurin spheroid
A Maclaurin spheroid is an oblate, rotationally symmetric ellipsoidal figure used in astrophysics and geophysics to model the equilibrium shape of a uniformly rotating, self-gravitating fluid body.
-
D.
Roche ellipsoid
A Roche ellipsoid is an equilibrium shape assumed by a self-gravitating fluid body that is tidally distorted by a nearby massive companion, important in the study of close binary systems and tidal interactions.
-
E.
Humboldt meridian
The Humboldt meridian is a principal survey meridian used as a reference line for land surveying and mapping in parts of northern California.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: basedOnEllipsoid Context triple: [Ordnance Survey National Grid, basedOnEllipsoid, Airy 1830 ellipsoid]
-
A.
usesEllipsoid
chosen
Indicates that one entity employs or is based on a particular ellipsoid as its geometric or reference model.
-
B.
hasApproximateDistanceFromEquator
Indicates that one entity has an approximate measured or estimated distance from the Earth's equator.
-
C.
distanceFromEarthCenter
Indicates the measured or calculated spatial distance between an entity and the center of the Earth.
-
D.
isGeocentric
Indicates that something is centered around, or takes the Earth as the central reference point in, a spatial or cosmological framework.
-
E.
referenceSurface
Indicates that one entity serves as the surface or base relative to which another entity is positioned, aligned, or defined.
- F. None of above.
Provenance (4 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_69c0084869e881908d7859492183ca7b |
completed | March 22, 2026, 3:18 p.m. |
| NER | Named-entity recognition | batch_69c0400f1af881908d376ea4793f6dea |
completed | March 22, 2026, 7:16 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c09856bd7881909bf6a87e0c071103 |
completed | March 23, 2026, 1:33 a.m. |
| PD | Predicate disambiguation | batch_69c0333fdd7081908d829265caa2ac11 |
completed | March 22, 2026, 6:21 p.m. |
Created at: March 22, 2026, 3:53 p.m.