Triple

T2209820
Position Surface form Disambiguated ID Type / Status
Subject National Geodetic Survey E50887 entity
Predicate defines P264 FINISHED
Object North American Vertical Datum of 1988 E246427 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: North American Vertical Datum of 1988 | Statement: [National Geodetic Survey, defines, 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 Geodetic Survey, defines, North American Vertical Datum of 1988]
  • A. North American Vertical Datum of 1988 chosen
    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.
  • B. 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.
  • C. 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.
  • D. 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.
  • E. National Water Information System
    The National Water Information System is a comprehensive U.S. database and platform that provides access to nationwide water resources data, including streamflow, groundwater levels, water quality, and water use.
  • 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_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_69ae7efa34e88190a6907515b574f752 completed March 9, 2026, 8:04 a.m.
Created at: March 4, 2026, 7:46 p.m.