Triple

T989680
Position Surface form Disambiguated ID Type / Status
Subject Missouri River E21358 entity
Predicate USStateBorderFor P22803 FINISHED
Object Nebraska–South Dakota border
The Nebraska–South Dakota border is a U.S. state boundary running largely along the Missouri River, separating Nebraska to the south from South Dakota to the north.
 E119482 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: Nebraska–South Dakota border | Statement: [Missouri River, USStateBorderFor, Nebraska–South Dakota border]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Nebraska–South Dakota border
Context triple: [Missouri River, USStateBorderFor, Nebraska–South Dakota border]
  • A. Nebraska–Iowa border
    The Nebraska–Iowa border is the state line in the central United States that largely follows the course of the Missouri River, separating Nebraska to the west from Iowa to the east.
  • B. Iowa–South Dakota border
    The Iowa–South Dakota border is the state line in the north-central United States that largely follows the course of the Big Sioux River, separating Iowa from South Dakota.
  • C. Nebraska–Missouri border
    The Nebraska–Missouri border is the state line in the central United States that largely follows the course of the Missouri River, separating Nebraska to the west from Missouri to the east.
  • D. Missouri–Kansas state line
    The Missouri–Kansas state line is the boundary separating the states of Missouri and Kansas, notably running through the Kansas City metropolitan area and dividing it between the two states.
  • E. Nevada–Utah state line
    The Nevada–Utah state line is the boundary separating the U.S. states of Nevada and Utah, running through remote desert landscapes and near notable features such as the Bonneville Salt Flats.
  • 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: Nebraska–South Dakota border
Triple: [Missouri River, USStateBorderFor, Nebraska–South Dakota border]
Generated description
The Nebraska–South Dakota border is a U.S. state boundary running largely along the Missouri River, separating Nebraska to the south from South Dakota to the north.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Nebraska–South Dakota border
Target entity description: The Nebraska–South Dakota border is a U.S. state boundary running largely along the Missouri River, separating Nebraska to the south from South Dakota to the north.
  • A. Nebraska–Iowa border
    The Nebraska–Iowa border is the state line in the central United States that largely follows the course of the Missouri River, separating Nebraska to the west from Iowa to the east.
  • B. Iowa–South Dakota border
    The Iowa–South Dakota border is the state line in the north-central United States that largely follows the course of the Big Sioux River, separating Iowa from South Dakota.
  • C. Nebraska–Missouri border
    The Nebraska–Missouri border is the state line in the central United States that largely follows the course of the Missouri River, separating Nebraska to the west from Missouri to the east.
  • D. Missouri–Kansas state line
    The Missouri–Kansas state line is the boundary separating the states of Missouri and Kansas, notably running through the Kansas City metropolitan area and dividing it between the two states.
  • E. Nevada–Utah state line
    The Nevada–Utah state line is the boundary separating the U.S. states of Nevada and Utah, running through remote desert landscapes and near notable features such as the Bonneville Salt Flats.
  • 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_69a493c383dc8190a03257f22d4b4183 completed March 1, 2026, 7:30 p.m.
NER Named-entity recognition batch_69a4b75103688190a14342eef3842984 completed March 1, 2026, 10:01 p.m.
NED1 Entity disambiguation (via context triple) batch_69ac3ba34c808190a745740c93cd520c completed March 7, 2026, 2:52 p.m.
NEDg Description generation batch_69ac3c11ea9c8190addcaacd445c32bc completed March 7, 2026, 2:54 p.m.
NED2 Entity disambiguation (via description) batch_69ac3cd94ab48190ade678fdce311b03 completed March 7, 2026, 2:57 p.m.
Created at: March 1, 2026, 7:41 p.m.