Triple

T10451230
Position Surface form Disambiguated ID Type / Status
Subject North American Vertical Datum of 1988 E246427 entity
Predicate replaced P101 FINISHED
Object National Geodetic Vertical Datum of 1929 E859786 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: National Geodetic Vertical Datum of 1929 | Statement: [North American Vertical Datum of 1988, replaced, National Geodetic Vertical Datum of 1929]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: National Geodetic Vertical Datum of 1929
Context triple: [North American Vertical Datum of 1988, replaced, National Geodetic Vertical Datum of 1929]
  • A. National Geodetic Vertical Datum of 1929 chosen
    The National Geodetic Vertical Datum of 1929 is an older United States vertical reference system used to define elevations above sea level before being superseded by NAVD 88.
  • B. 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.
  • C. North American Datum of 1927
    The North American Datum of 1927 is a geodetic reference system that long served as the standard coordinate framework for mapping and surveying in North America before being superseded by more modern datums.
  • D. 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.
  • E. North American-Pacific Geopotential Datum of 2022
    The North American-Pacific Geopotential Datum of 2022 is a modern, gravity-based vertical reference system intended to replace older height datums across North America and the Pacific regions within the National Spatial Reference System.
  • 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_69d381c04fe08190957c26c526a3b05a completed April 6, 2026, 9:49 a.m.
NER Named-entity recognition batch_69d4fe0a6a548190a54212912f618e4e completed April 7, 2026, 12:52 p.m.
NED1 Entity disambiguation (via context triple) batch_69d87efedf6c8190aa4b7bbe5f160eeb completed April 10, 2026, 4:39 a.m.
Created at: April 6, 2026, 12:17 p.m.