Triple
T825783
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Prime Meridian |
E17848
|
entity |
| Predicate | historicalBasis |
P1409
|
FINISHED |
| Object | Greenwich meridian |
E17848
|
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: Greenwich meridian | Statement: [Prime Meridian, historicalBasis, Greenwich meridian]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Greenwich meridian Context triple: [Prime Meridian, historicalBasis, Greenwich meridian]
-
A.
Prime Meridian
chosen
The Prime Meridian is the internationally recognized zero-degree line of longitude from which all other longitudes and global time zones are measured.
-
B.
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.
-
C.
San Bernardino meridian
The San Bernardino meridian is a principal survey meridian used as a reference line for land surveying and mapping in Southern California and parts of Nevada.
-
D.
International Date Line
The International Date Line is an imaginary longitudinal line, roughly following the 180th meridian through the Pacific Ocean, where calendar dates change by one day when crossed.
-
E.
Greenwich Mean Time
Greenwich Mean Time is the mean solar time at the Royal Observatory in Greenwich, London, historically used as the world’s primary reference for timekeeping and the basis for Coordinated Universal Time (UTC).
- 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_69a4937c9c188190aaa216f6b466f452 |
completed | March 1, 2026, 7:29 p.m. |
| NER | Named-entity recognition | batch_69a4ab976094819086d676404d745750 |
completed | March 1, 2026, 9:11 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a76d9577f081908aa31b1926e04bb8 |
completed | March 3, 2026, 11:24 p.m. |
Created at: March 1, 2026, 7:38 p.m.