Triple

T148488
Position Surface form Disambiguated ID Type / Status
Subject GMT E3380 entity
Predicate referenceMeridian P6025 FINISHED
Object Prime Meridian
The Prime Meridian is the internationally recognized zero-degree line of longitude from which all other longitudes and global time zones are measured.
E17848 NE FINISHED

How this triple was built (5 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 | Statement: [GMT, referenceMeridian, Prime Meridian]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Prime Meridian
Context triple: [GMT, referenceMeridian, Prime Meridian]
  • A. 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.
  • B. 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).
  • C. Tropic of Cancer
    The Tropic of Cancer is the northernmost latitude on Earth where the sun can appear directly overhead, marking the boundary of the tropical zone in the Northern Hemisphere.
  • D. Equator
    The Equator is an imaginary line encircling the Earth at equal distance from the poles, dividing the planet into Northern and Southern Hemispheres and marking 0° latitude.
  • E. Tropic of Capricorn
    The Tropic of Capricorn is the southernmost latitude where the sun can appear directly overhead, marking an important boundary of the Earth's tropical zone.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg Description generation gpt-5.1
Instruction
Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Prime Meridian
Triple: [GMT, referenceMeridian, Prime Meridian]
Generated description
The Prime Meridian is the internationally recognized zero-degree line of longitude from which all other longitudes and global time zones are measured.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Prime Meridian
Target entity description: The Prime Meridian is the internationally recognized zero-degree line of longitude from which all other longitudes and global time zones are measured.
  • A. 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.
  • B. 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).
  • C. Tropic of Cancer
    The Tropic of Cancer is the northernmost latitude on Earth where the sun can appear directly overhead, marking the boundary of the tropical zone in the Northern Hemisphere.
  • D. Equator
    The Equator is an imaginary line encircling the Earth at equal distance from the poles, dividing the planet into Northern and Southern Hemispheres and marking 0° latitude.
  • E. Tropic of Capricorn
    The Tropic of Capricorn is the southernmost latitude where the sun can appear directly overhead, marking an important boundary of the Earth's tropical zone.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: referenceMeridian
Context triple: [GMT, referenceMeridian, Prime Meridian]
  • A. hasEquatorialCircumference
    Indicates that one entity has a specified measurement for its circumference at the equator.
  • B. hasEquatorialRadius
    Indicates that an entity has a specified radius measured at its equator.
  • C. coordinateLatitude
    Indicates the north–south geographic position of an entity on the Earth’s surface, expressed as a latitude coordinate.
  • D. geographicCenter
    Indicates the location that serves as the central point of a geographic area or region.
  • E. coordinateLongitude
    Indicates the east–west geographic position of an entity on the Earth’s surface, expressed as a longitude value.
  • F. None of above. chosen

Provenance (7 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_69a252868de4819080e21c9938bfe8b6 completed Feb. 28, 2026, 2:27 a.m.
NER Named-entity recognition batch_69a257ecb6f48190992c4c8ca908a81c completed Feb. 28, 2026, 2:50 a.m.
NED1 Entity disambiguation (via context triple) batch_69a2c52df3b48190960c53fd872ff897 completed Feb. 28, 2026, 10:36 a.m.
NEDg Description generation batch_69a2c5a7925481909fa398453451a126 completed Feb. 28, 2026, 10:38 a.m.
NED2 Entity disambiguation (via description) batch_69a2c60ae5108190b735939eac69e11a completed Feb. 28, 2026, 10:40 a.m.
PD Predicate disambiguation batch_69a256599db08190a7b000b381d32ec4 completed Feb. 28, 2026, 2:43 a.m.
PDg Predicate description generation batch_69a25737f9188190b9690dce98aed83a completed Feb. 28, 2026, 2:47 a.m.
Created at: Feb. 28, 2026, 2:31 a.m.