Triple
T2184579
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Zulu time |
E49120
|
entity |
| Predicate | referenceMeridian |
P6025
|
FINISHED |
| Object | Prime Meridian at Greenwich |
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: Prime Meridian at Greenwich | Statement: [Zulu time, referenceMeridian, Prime Meridian at Greenwich]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Prime Meridian at Greenwich Context triple: [Zulu time, referenceMeridian, Prime Meridian at Greenwich]
-
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.
Greenwich, Kent, England
Greenwich, Kent, England is a historic riverside town on the River Thames best known as the birthplace of King Henry VIII and other Tudor monarchs and for its later role in maritime history and timekeeping.
-
C.
Greenwich Peninsula, London, England
Greenwich Peninsula in London, England is a major riverside redevelopment area on a bend of the River Thames, known for its modern architecture, cultural venues, and the landmark O2 Arena.
-
D.
Maritime Greenwich
Maritime Greenwich is a historic district in southeast London renowned for its maritime heritage, royal park, and the Royal Observatory, where the Prime Meridian is located.
-
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_69a88aa72d348190a9544bb5b8a4e71d |
completed | March 4, 2026, 7:40 p.m. |
| NER | Named-entity recognition | batch_69abbf1009788190973cf94db68fbb6b |
completed | March 7, 2026, 6 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ae654016a88190a242d43491f0726c |
completed | March 9, 2026, 6:14 a.m. |
Created at: March 4, 2026, 7:45 p.m.