Triple

T13489778
Position Surface form Disambiguated ID Type / Status
Subject Roosevelt Island (Antarctica) E318602 entity
Predicate discoveredBy P412 FINISHED
Object United States Antarctic Service Expedition E362684 NE FINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

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: United States Antarctic Service Expedition | Statement: [Roosevelt Island (Antarctica), discoveredBy, United States Antarctic Service Expedition]

Disambiguation candidates (1 decision)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: United States Antarctic Service Expedition
Context triple: [Roosevelt Island (Antarctica), discoveredBy, United States Antarctic Service Expedition]
  • A. United States Antarctic Service Expedition chosen
    The United States Antarctic Service Expedition was a U.S. government-sponsored Antarctic exploration program (1939–1941) led by Rear Admiral Richard E. Byrd that conducted extensive geographic and scientific surveys on the continent.
  • B. Byrd Antarctic Expedition I
    Byrd Antarctic Expedition I was a pioneering late-1920s American scientific and exploratory mission to Antarctica led by aviator and polar explorer Richard E. Byrd, notable for its extensive use of aircraft and radio.
  • C. Amundsen–Ellsworth–Nobile expedition
    The Amundsen–Ellsworth–Nobile expedition was a 1926 polar venture led by Roald Amundsen, Lincoln Ellsworth, and Umberto Nobile that achieved the first verified crossing of the Arctic Ocean by airship.
  • D. Russian Antarctic Expedition
    The Russian Antarctic Expedition is Russia’s national polar research program responsible for conducting scientific exploration and maintaining research stations across Antarctica.
  • E. Commonwealth Trans-Antarctic Expedition
    The Commonwealth Trans-Antarctic Expedition was a 1955–1958 British-led mission that achieved the first overland crossing of Antarctica via the South Pole.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 batches)

Stage Batch ID Job type Status
creating batch_69d806b6bfec819089222715b2e86c8e elicitation completed
NER batch_69dbaf3cbe2081908c6792362c67c8f1 ner completed
NED1 batch_69f7463b758c8190abc0dd2a049d751e ned_source_triple completed
Created at: April 9, 2026, 9:43 p.m.