Triple

T2209726
Position Surface form Disambiguated ID Type / Status
Subject National Spatial Reference System E50885 entity
Predicate historicalComponent P32486 FINISHED
Object North American Vertical Datum of 1988
The North American Vertical Datum of 1988 (NAVD 88) is the primary geodetic reference system used across North America to define consistent elevations above mean sea level for mapping, surveying, and engineering.
 E246427 NE FINISHED

How this triple was built (4 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: North American Vertical Datum of 1988 | Statement: [National Spatial Reference System, historicalComponent, North American Vertical Datum of 1988]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: North American Vertical Datum of 1988
Context triple: [National Spatial Reference System, historicalComponent, North American Vertical Datum of 1988]
  • A. North American Datum of 1983
    North American Datum of 1983 is a geodetic reference system used across North America to define precise locations on the Earth's surface for mapping, surveying, and navigation.
  • B. National Spatial Reference System
    The National Spatial Reference System is the official coordinate framework used in the United States to define precise locations, elevations, and boundaries for mapping, surveying, and navigation.
  • C. National Geodetic Survey
    The National Geodetic Survey is the U.S. federal agency responsible for defining, maintaining, and providing access to the national coordinate system used for mapping, charting, and navigation.
  • D. WGS84
    WGS84 is the global geodetic reference system and standard coordinate framework used for GPS and most modern mapping applications.
  • E. International Terrestrial Reference System
    The International Terrestrial Reference System is a globally standardized, Earth-centered coordinate framework used for precise positioning, navigation, and geodetic measurements.
  • 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: North American Vertical Datum of 1988
Triple: [National Spatial Reference System, historicalComponent, North American Vertical Datum of 1988]
Generated description
The North American Vertical Datum of 1988 (NAVD 88) is the primary geodetic reference system used across North America to define consistent elevations above mean sea level for mapping, surveying, and engineering.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: North American Vertical Datum of 1988
Target entity description: The North American Vertical Datum of 1988 (NAVD 88) is the primary geodetic reference system used across North America to define consistent elevations above mean sea level for mapping, surveying, and engineering.
  • A. North American Datum of 1983
    North American Datum of 1983 is a geodetic reference system used across North America to define precise locations on the Earth's surface for mapping, surveying, and navigation.
  • B. National Spatial Reference System
    The National Spatial Reference System is the official coordinate framework used in the United States to define precise locations, elevations, and boundaries for mapping, surveying, and navigation.
  • C. National Geodetic Survey
    The National Geodetic Survey is the U.S. federal agency responsible for defining, maintaining, and providing access to the national coordinate system used for mapping, charting, and navigation.
  • D. WGS84
    WGS84 is the global geodetic reference system and standard coordinate framework used for GPS and most modern mapping applications.
  • E. International Terrestrial Reference System
    The International Terrestrial Reference System is a globally standardized, Earth-centered coordinate framework used for precise positioning, navigation, and geodetic measurements.
  • F. None of above. chosen

Provenance (5 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_69a88b06709c8190978fb2418470d1b6 completed March 4, 2026, 7:41 p.m.
NER Named-entity recognition batch_69abbfce5abc8190b90b92e32045385d completed March 7, 2026, 6:03 a.m.
NED1 Entity disambiguation (via context triple) batch_69ae6af84b708190ac3170a343eb107f completed March 9, 2026, 6:38 a.m.
NEDg Description generation batch_69ae6b31eccc81908fbcc80f72e65df8 completed March 9, 2026, 6:39 a.m.
NED2 Entity disambiguation (via description) batch_69ae6bd2856c81909033efe74039c258 completed March 9, 2026, 6:42 a.m.
Created at: March 4, 2026, 7:46 p.m.