Triple

T5892312
Position Surface form Disambiguated ID Type / Status
Subject Ken Watanabe E131018 entity
Predicate notableWork P4 FINISHED
Object Letters from Iwo Jima E132624 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: Letters from Iwo Jima | Statement: [Ken Watanabe, notableWork, Letters from Iwo Jima]

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: Letters from Iwo Jima
Context triple: [Ken Watanabe, notableWork, Letters from Iwo Jima]
  • A. Letters from Iwo Jima chosen
    Letters from Iwo Jima is a 2006 war film directed by Clint Eastwood that depicts the Battle of Iwo Jima from the Japanese perspective, focusing on the experiences of General Tadamichi Kuribayashi and his soldiers.
  • B. Sands of Iwo Jima
    Sands of Iwo Jima is a 1949 World War II drama film starring John Wayne as a tough Marine sergeant training recruits for the pivotal Battle of Iwo Jima.
  • C. Kita Iwo Jima
    Kita Iwo Jima is a remote, uninhabited volcanic island in the Pacific Ocean that forms part of Japan’s Ogasawara (Bonin) archipelago.
  • D. Raising the Flag on Iwo Jima
    Raising the Flag on Iwo Jima is an iconic World War II photograph by Joe Rosenthal depicting U.S. Marines hoisting the American flag atop Mount Suribachi, symbolizing American victory and sacrifice in the Pacific theater.
  • E. film "Sands of Iwo Jima"
    "Sands of Iwo Jima" is a 1949 World War II drama film starring John Wayne as a tough Marine sergeant training troops for the pivotal Battle of Iwo Jima.
  • 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_69c00857439c819095950754176aa58a elicitation completed
NER batch_69c036b45bec81908a13f39bbc181a59 ner completed
NED1 batch_69c0b14c2ff081908243988d5815be6d ned_source_triple completed
Created at: March 22, 2026, 3:58 p.m.